turbo options
well it really depends on what power you are after
if you just wanna go for the 300whp mark a 46 trim or 50 trim upgraded ct26 will do the job and still spool nicely... and of course that will use the stock manifold
j tube mod
on the intake manifold side of the block is where the jtube is located, if you follow the fuel line from your fuel pressure regulator down you will see a bracket that is bolted to the block, fuel passes through that and back to the tank
the exit side of the jtube only has a small pinhole for the fuel return which can be a restriction when upgrading fuel pump/pressure regulator
you can either drill the hole out or bypass it altogether
intercooler
i've found a good size (sorry in metric measurement lol) 550x300x75 seems to work well with 2 1/2" intercooler hardpipes
tems shocks
tokico illumina II's are tems replacements for our car and the only tems aftermarket option
arp head studs
$100 is basically what i paid and they're well worth the money
aftermarket head gaskets
cometic and hks are recommended
again this depends on what power and boost you intend to run
if you want to run 15-20psi boost i would recommend lowering the compression slightly for detonation purposes
when take your engine to your machine shop and have it prepared for a mhg they will tell you what size you need
if you want to lower your compression just a little you can get a slightly thicker head gasket
have a chat with your machine shop they will help you out
boost controllers
electronic ones are recommended as they are highly accurate, you don't "have" to get a dual stage you can just get a single stage
a manual one could do for now if you wanna get that boost up a little
aftermarket ecu's
AEM does/or is coming up with a plug n play ecu for the 7mgte and i've only heard the best about them