Where are you guys getting your ported stock manifolds, Ebay then porting them? I have had a WTB posted for a few weeks now with no avail. Of course, this is before I was considering the SS options.
I definitely get the appeal of the stock manifold. Even if the stock shield won't directly fit the entire housing of the Garrett core, it could be modified to cover just the manifold, which will still help greatly. Heat is ALWAYS the enemy