LS6 powered V8 supported by aluminum lightweight block. pumping 405HP from factory. Car currently has Borla Pro-Touring Cat Back exhaust 2. 5" diameter piping entering exhaust with 2" exit. Long tube headers 1 3/4 which help engine put down 365 rwhp on Dyno Dynamics Dynamo-meter(Heartbreak Dyno). Fine tuned recently for optimum gas mileage and drive ability. Will provide dyno sheet and also tunes for various driving conditions. Does about about 24MPG on highway with current tune. Projector styled headlamps with HID kit. Unopened 50th Anniversary manual. Here are some Factory specs provided by Wikipedia. ManufacturerChevroletProduction2001–2004AssemblyBowling Green. Kentucky. nbsp;United StatesBody and chassisBody style2-door hardtop coupéLayoutFMR layoutPlatformY-bodyPowertrainEngine5. 7 L LS6 V8Transmission6-speed manualDimensionsWheelbase104. 5 in (2. 54. 3 mm)Length179. 7 in (4. 64. 4 mm)Width73. 6 in (1. 69. 4 mm)Height47. 7 in (1. 11. 6 mm)Curb weight3. 15 lb (1. 13 kg)ChronologyPredecessorChevrolet Corvette C4 ZR-1SuccessorChevrolet Corvette C6 Z06Performance SpecsEventPerformance0-60 mph3. 9 sec[2]0-100 mph9. 2 sec[3]0-100-0 mph13. 56 sec[3]1/4 Mile11. 97 sec[4]Skid Pad1. 03 G[3]Top Speed170 mph (270 km/h)Nürburgring Nordschleife Lap Time *7:56[5]