Where's the leak at, the header collector's? I thought the QTP headers have an expanded collector and it looks like the pipes go inside the header collectors. That's a bad design. But don't get anything welded to the headers. If you ever need to drop the transmission then your exhaust gets in the way. Have a shop fab up the pipes to clamp onto the outside of the collectors. And don't bother with a 3 bolt flange collector, that's old school which means blown out gaskets and leaks forever! Don't bother asking how I know.
If the weather looks good for Wed, maybe I'll bring the 70 over to 5 guys for lunch, I haven't been there since last year.