[suprra_girl]

unless you have $2k spare don't bother changing the gte manifold & turbo as there is alot of other little work required to get it all running

exhaust
reweld in stock 02 sensor into new downpipe
oil feed and drain hoses and fittings for all the hoses
new intake with plumback holes for isc, bov and pcv hoses
new air filter (don't wanna damage that new turbo)
block off water lines if your new turbo isn't watercooled (loop don't block)
buy an external wastegate if the new turbo isn't internally gated
if going external then welding in the dump tube to the exhaust so you don't fail your warrant check
if your turbo is internal then getting a block off flange made for the external flange on the exhaust manifold (ideally getting it cut off and welded shut as close to the runners as possible

i think that's pretty much it but you are in for a fair bit of work when going aftermarket turbo

so... get that ct rebuilt and upgraded lol