at 18psi ..is resleeving nessesary?

i'd say so... the general thing is to resleeve if you're going to push anything over 15 psi.. especially on your d16y7... how bout an engine swap?

i kinda always played with a new engine in my head but i know what mine has been thru(moble 1)...if i get swap my weight dsitrubtion would blow and it would be kinda cool having a fast sohc.

yeah resleeve is must, id say darton or golden eagle where available

I don't know if they make D-series sleeve (I know they make H and B series), but AEBS makes the best sleeves on the market IMO. Check them out, They use a 2000 interfernece fit on there sleeves, meaning they go into the block a ways with an interference fit, and then a sealent is added for added protection. Darton uses a rubber gasket to sleeve, which seems like it would get brittle and deteriorate over time like most rubber gaskets do. Still, darton has been making sleeves for awhile. I know in the past GE had issues with their sealent leaking awhile ago (thought they claim to have fixed it since then). If they truely did fixed it since then, that should be okay then.

Still, any of those will be better than running that non-sleeved. I'd say if AEBS makes the correct sleeves for your motor, go with them, otherwise, check out Golden Eagle or Darton, and go with whichever one seems to feel better to you. Remember, any of these brands will be better than not re-sleeving.

Also, Benson Performance Machining does a pretty good job sleeving, I don't know who they use or if it's their own, but you can give them a call.

If you need some phone numbers, I look for them and post them once I get home.