The revisions were '86.5-'88, '89-'92 (up to '93 in some regions). There were some changes made from '89 to '90 and then '91 and '92 had some addition changes. The vast majority of changes made between '89 and '92 were minor and not worth nit picking over. My personal preference would be a pristine '91 or '92 but I'd take a pristine '89 over '92 which needed a lot of work.
I hope you realize just how long it may take for such a build to actually be ready for daily service... Buy a second car (or hang on to whatever you're currently rolling around in).
No, the CT-26 will not get you to that power level, not even a heavily upgraded one. So yes, add a new exhaust manifold and exhaust and turbo to your shopping list. A better fuel pump would be on the top of my list.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.
If you're so inclined I'm always more than happy to accept tips via PayPal. 
Tip Jar ---> 
|