So the smaller exhaust housing makes the turbo spool quicker, correct? Does the HX35 from a 2nd gen 12v bolt right up to a 1st gen? Sorry guys, I'm a noob when it comes to turbos

 

Yep it bolted right up for me. except the wastegate is in the way of getting the lower left bolt in so I would suggest going to hardware store and buying a stud and nut. install the stud(still will not go in with wastegate). My exhaust hausing was also longer so you need to loosen the ex. hanger with the hard bracket that goes to tranny. I can tell mine spools quicker. I also have small ex leak right off clamp. the 90 from turbo down with my exh. brake is a real hard bend with a squash to it.

 

He has a 12cm echaust housing