i have a 1987 rx7 base w/ a motor swap 13bt. i was thinkin about doing a 13b supercharged but from the research that ive been doing. the supercheage cost more then to do a 13bt swap. plus they dont get much HP form the superchage plus the port job. ive been talkin to people that have done the superchage on the 13b. they told me it would be best for me to do 13bt then to superchaged it. they said they wish they woudl of went turbo instead but. they also wanted to be diffrent. if i was you i'll go turbo. but if you want to be diffrent then superchage is theway to go. and the thing about TQ... um.. 183Hp and 180TQ is the stock 13bt s4... the s5 13bt is 200HP 190 somethign TQ... um.. the tq is there... but light car don't need alot of TQ. lol but its always fun to have alot of tq in a light car. but anyways good luck w/ your project :D

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