89 supra turbo mods

[bbullsj]

i have an 89 supra turbo automatic. i blew the head gasket externally so im ripping it down. i was wonder what some easy options for upgrades were? everything is stock on it except for 3 inch stainless exhaust from bottom of manifold and back. ive heard swapping out the cams for n/a ones? does the timing need to be set differently than stock then? twin turbo setup(which would be costlty and prob some custom fab work)? aftermarket exhaust manifold that will still bolt up to the stock ct-26 turbos?
im not looking to get into fuel injectors, pump, and ignition yet. need to get it back driveable first but looking for some easy upgrades while im doing the head gasket.
are valve seals fairly easy to do or do they require some special tools?

it is currently an automatic but im hoping to convert it to a manual soon. i know i should just buy one thats a manual and same myself a lot of time but this car is in such good shape with no rust and ive put a lot of new parts on it in the past 2 years that i dont want to have to do to a new one.
if anyone has some good info or knows any sites or other threads that will help me it would be greatly appreciated. ive seen some other threads discuss upgrades but one always seems to contradict each other on which ones are the best.

[bgrieger]

If you're going to a metal gasket, upgrades are fine. If you're planning on staying stock for the gasket, you're not going to want to increase the power.

To some of your notes:

The NA cams are disputed as to whether they help. I personally wouldn't bother.

Twins are hugely expensive. I'm over 10k into mine, and I've still got a few more to spend.

Fuel and such are a requirement for any serious upgrade. If you're not planning to upgrade these components, you are pretty much limited to increasing the boost to roughly 12psi on the stock CT with the exhaust you have now. Anything more requires fuel and other components, and engine upgrades. Again, the metal gasket is the starting point.

The A340 seems for most to be fine with the 12 PSI route. More than that and the automatic becomes a weak link, though the R154 replacement is really not all that bad if you can source the parts.

[supra88]

Stay with a single turbo twin turbo is not a good idea,
the most important part now is to make sure the machine shop is doing a good job the head and block finish need to be close to a mirror finish
use a metal head gasket and arp bolts

read here there is a lot of information , but im happy that i no longe have a 7mgte engine

http://suprasonic.org/sonic/sonic.htm

http://www.suprasonic.org/public_htm.../mk3_pmtn.html