This 2008 Audi S4 Avant has been with the seller since 2013, during which time it was transformed into an RS4 clone using factory widebody panels along with a rebuilt and modified 4.2-liter FSI RS4 V8 with factory headers and intake manifolds. Power is routed through a 6-speed manual gearbox and differential from an S4 donor car. Other modifications include custom green paint, a set of KW V3 coilovers, 365mm Brembo GT front brakes, a JHM R-series Stage 3 clutch, an ECU tune, heated leather Recaro Sportster CS seats, forged 19″ HRE wheels, carbon fiber engine covers, and more. This Avant is offered with a clean Connecticut title in the seller’s name. The widebody conversion was conducted by Frank’s Auto Care in Hamden, Connecticut, with the bulk of the panels reportedly sourced from a US-spec RS4 and the rear bumper from a German-spec Avant. Sheet metal was repaired and resurfaced prior to installation and the body was refinished in Cambridge Green Metallic, a hue available only through the Audi Exclusive paint program. A walk-around video can be seen above. Newer headlights were fitted and feature Euro-style clear corners as well as LED city lights. Mars Performance LED taillights were also installed. Paint correction was recently carried out followed by application of XPEL protective film to the forward surfaces and rocker panels along with ceramic coating to the body and wheels. The car rides on a set of forged 19×9.5″ HRE wheels shod in Bridgestone RE-11 tires at each corner. The ride height has been lowered using KW V3 coilovers, and other suspension alterations include an 034 Motorsports rear sway bar, adjustable end links, and Density Line control arms. A newer OEM engine skid plate and splash guard are fitted according to the seller. Braking is handled by 365mm Brembo GT rotors up front, a JMH big-brake kit out back, and EBC pads that have reportedly been used for 5k miles. Drone footage can be seen above. The interior is trimmed in black leather and fitted with heated Recaro Sportster CS seats, SRP pedals, an Audi TTRS flat-bottom steering wheel with airbag, and a Black Forest Industries heavy-weight shift knob. The odometer displays approximately 111k chassis miles. No reverse lights are present, and a dash light is illuminate indicating a burnt bulb, though the seller notes a faulty LED resistor as the culprit. with exception of the rear fog light and reverse lights according to the seller. A 2017 air conditioning service included installation of a new compressor and receiver drier. The engine was built from two torn-down long blocks by Redline Speed Worx in Green Brook Township, New Jersey. An RS4 short block was checked for balance and rebuilt using new bearings and RS4 cylinder heads, headers, intake manifold, and valve covers. A new starter and relay were installed, an Optima battery was relocated to the trunk, and a third RS4-style torque mount was welded to the engine bay. The engine benefits from a custom ECU tune and remap as well as newer water and oil pumps, fuel system parts, injectors, spark plugs, and ignition coils. Additional modifications to the engine and exhaust include the following items: JHM 2.75″ cat-less down-pipes EBWerks 2.75″ cat-back exhaust without resonators Grouppe M carbon fiber cold air intake K&N air filter 034 Motorsports mass air flow hose JHM upgraded oil cooler adapters and 12AN stainless lines Earl’s oil cooler New OEM carbon fiber engine covers R8 oil cap, coolant cap, and new coolant reservoir A 6-speed manual gearbox and rear differential were sourced from an S4 which reportedly showed 90k miles to replace the stock automatic transmission. The following items were installed during the transmission swap: JHM R-series stage-3 clutch, pressure plate, and lightweight flywheel JHM limited-slip helical gear differential JHM full trio short shifter and linkage Stainless steel clutch master to slave cylinder line 034 Motorsports Density Line motor mounts ECS Tuning rear differential mount Several in-progress photos of the widebody conversion and engine build can be seen in the photo gallery. The Carfax report indicates a front-end accident in May 2014. A cold-start and 20-minute review video are viewable below. The car has won several awards and was featured in an issue of Audi magazine Quattro Quarterly as shown in the gallery below.