listen to T2 don't bother, if you want to mod your Z you first need to get it rebuilt other wise your wasting you time and money, don't get me wrong I'm all about moding read my profile but you want a strong engine first, one that will last especially if you want to do serious mods like boost, nitrious, etc. Either way thats were I'd start after the rebuild man I'd say mod it until your satisfied I ain't satisfied but the wallet only goes so far a month, so you do what you can as you can, Good Luck with your choices with your Z and by the way welcome to your new addiction ( J's are addicting to mod). Welcome to the Org.
if you haven't already check out
http://www.v6z24.com
| '89 Z24 Auto | '99 Prelude 5spd | '04 GS500F | '05 HD 883L |