5.3 LS 400 turbo 9" quick performance with 31 spline axles and rear disc brake conversion. The car very recently had total drive train replaced. Big cam, pac springs. Brand new rear end, adjustable upper link bars, 3 way adjustable drag shocks, holley fuel pump, wheels and tires, 3500 stall converter, hooker headers, motor mounts, head gaskets, intake, holley dual line double pumper, msd electronics with software package, nitrous kit, b&m shifter, 4 flu radiator with built in fans, water pump thermostat, belts and hoses. I had a big block in it (1970 455 stage one ) when it blew a head gasket we did the L.S. swap. The big block comes with the car, it's strong running motor needs head gasket. Also the original 3.8 and trans. I bought the car in 2018 swapped to the big block not long after. I've only driven the car about a hundred miles since. The LS swap was couple months ago. Car is very street capable driver... or you can put a cage in it put the big jets in it and go racing.