My 83 was a turbo ZX . Power was ok but LS1 is much better , especially with a T56 behind it . Unfortunately , the rear diff can't handle the power . Going to do solid axle setup soon , before the 6.0 turbo build . Already have the LQ4 block ( needs to be forged ) , LS3 heads and intake , Z06 ( LS6 ) cam , T76mm turbo , 102mm TB .