I am looking to swap my defective (leaking/warped) L36 upper IM for a better one. Is there a benefit in going to an L26 upper, and/or is it more costly, than just doing the $130 Dorman? Less costly? Does it require more work/parts?

Please help if you can. I've been trying to figure out the best route to take, and the car is down, and need it back up ASAP.

I'm also thinking of doing the Lower IM Gaskets at the same time, and possible the HV3 (High Velocity Intake Inserts, supposedly 20-30hp for $200, ZZPerformance).

Thank you in advance. (FYI, if you didn't figure it out, I have a '99 3.8 GT)

Edit: I can get an L26 upper IM for $50 at the junk yard. Base on that, please.

Next, I read about the Lower IM Gaskets:
Quote Originally Posted by BillBoost37 View Post
I'm going to rebutt the quackers and agree with you. The UIM doesn't magically go bad on the L36, but what happens is when you remove the TB, there's a tube coming up in a hole in the manifold. Taht's the EGR tube. It heats that area in the UIM and over many heat cycles it'll crack the UIM. Well there's a coolant jacket on the other side of that plastic and it'll leak into the LIM and fill it. In the meantime, you'll burn some coolant. Well...when that crack lets go and coolant pours into the motor, you'll hydrolock.

It's a good idea to change the UIM when you do the LIM. It's also a good idea to block the coolant passages going into the UIM for the future. That way this can never happen again. See the How to on modding a LIM.
Where is this "How to on modding a LIM?" I'd like to block the coolant passages going into the Upper IM.

Lastly, I noticed all the .php videos are gone, what happened to them, can they be restored? I need these:
http://www.grandprixforums.net/intake_gasket.php
http://www.grandprixforums.net/lim_lifter_video.php