I'm trying to install my Phat Shaft 62 on my 02. After you get the Hx35 off, there are two stud left in the exhaust manifold, while the Hx35 keeps the other two. The new turbo just has holes (not threaded). Can I just go down and get two bolts to hold the turbo to the manifold and use the existing two studs for the others? Also, the drainage outlet on the PS62 is retangular, where as the one that went to the HX35 was round. The gasket that you get with the PS62 is retangular. Is seems like it will seal okay, but I want to make sure. Thanks!!!!