firedriver: you might have noticed that this place is about Stovebolts, ie, inline GM engines. Yes, we all have those bent motors too but we work at not discussing them anymore than we have to. I'd recommend a HotRod site were they know a lot about bent motor headers.
Now if you decide on a new GM OHC inline six (or 5) like a Trailblazer uses we would be all ears.