i know that there are alot of na z32/z31's in the area and i know that there is only about 5 things that you can do to UP the hp in a z32.

1 ecu +25
2pulleys+5-15
3exhasust(headers,cat-pipe,intake,portthe intake manifold)
+15-20
these are from diffrent websites that i got this info..

also "ellsinger" makes and adjustable cam gears (+6-12)for the z32. also i dont know if there is a company that makes sparkplug wires for the z32.. but taking out the spare and all the extra weight on the car will make a little, almost non notice able diffrence..

also the lighter flywheel and upgraded clutch makes a diffrence. but if you upgrade any engine and you dont upgrade the clutch and flywheel i think that it is pretty smart on your part ya know.. but the flywheel weighs about 11lbs and i think that import"something" is haveing a sale on both of these and i think that you can walk out with both the clutch and the flywheel for about 650$ not bad for a stage 2 and a light flywheel.. oh i almost forgot the lighter single piece driveshaft. and think that you have 2 diffrent materials to choose from carbon and aluminum(sury spelling)
but this is about the NA not a turbo

GiDDeNz