I'm gonna mount the stock manifolds on a jig, cut the pipes from the top of the cat to the lower flanges & weld in some bent pipe. I don't have a mandrel bender, but I do have a $30 hydraulic bender and lots of beach sand (aaahhhh, Florida). That should do nicely for making good bends.
Oh, by the way. While you're at it, mod your Y pipe - if you haven't done it already. A modded Y flows better than the Y that comes with the headers.
