My 97 Lt1 has 1.6rr, 305cc,full bolt ons,stock injectors, stock water pump and pulleys, stock tune, longtubes, 90mm TB, AL. driveshaft and flywheel. MSD Al Box, 4.10s, 6Speed, put down 347rwhp 375Foot lbs Torque, and 400hp crank, next thing is a tune and 100shot