My car is in process of being put back together as we speak. This is more of a general question, since its a GVR-4 (E39A chassis). I am using our stainless tubular manifold, a Forced Performance Green model turbo (www.forcedperformance.com), and an HKS external wastegate. exhaust consists of ported Evo 3 O2 housing, and 3 inch turbo back exhaust. Where do you recommend mounting the wastegate flange too? Should I add anotehr pipe to the manifold (I am worried then about the weight of the wastegate leading to premature cracks in the manifold). Perhaps one of the tuning firms out there offers an O2 housing that is flanged for the HKS wastegate (no-one in the states does). Or, can I do it off the downpipe itself?