I searched for this and found a few threads that said that it was possible... but before I go buy a used turbo system(downpipe back) I just want to confirm...is it possible to put this system up under my N/A with a custom pipe from the exaust manifold to this system? Additional info... I have an 89 GTU with a rotted stock system and I found a decent turbo xs exhaust off of an 87 T2 in my area... will it work?

 

eh, i had an exhaust off a turbo II on mine, just took off the downpipe and test pipe, worked just fine for the regular cat back section

 

will the test pipe or cat fit too? cuz my cat is shot...

 

i would say that all you would have to do is just cut the flange off of the header and then just weld another. i think.