I have a few clearance problems with the addition of my Gear Vendors OD. I am also going from HP Manifolds to the Hedmans. I am headed to the exhaust shop this week to show the guy the work involved and what I want done. The thing is. This is Europe and this is a big car so they are gonna try and gouge me for anything they can. This guy only deals with stainless tubing. I dont really care for it and would prefer alminumized tubing but this guy is the best in the area.

My gut is telling me its not gonna be pretty and it is going to be astronomical. Is there a place in the States that I can give them my car make, model, engine size, header selection, and my gear Vendors and they make me a CNC bent system? I'd be shipping it back when I come to visit.

I just need the length of pipe between the collector flange and the mufflers. I will be going with an H-pipe. But the critical part is clearing the Gear Vendors. My H-pipe is sitting on it right now and the gasket melted and it goes drippy drip. I checked TTi but their exhaust systems are from full length headers or HP manifolds and they don't have any sort of email support.

Any ideas?

FWIW I have thought of using the Hedman shorties & if I did I would chop the collector flange off, bend up a headpipe that would weld to the collector & extend down to connect to the TTI slip on H pipe.. to me the bolt together flange creates tight clearances & a service issue...

Good luck getting info out of TTI for anything that’s not already in their catalog - that’s my experience anyway – twice!

FWIW, at 3-4 years and counting, I have no header gasket leaks. I tossed the supplied 2 ¼” nipples and welded 2 ½” pipe directly to the supplied collector flanges instead. It’s kinda silly to make a header for a bigblock and then supply hookups for 2 ¼” pipes!

Swim over to the Drydock and read these 2 threads of mine, they should help you some. I’ve done 2 X-pipes on C-bodies, and I’ve always wanted to make a jig and make some nearly-bolt-in C-body X-kits but I don’t have time to develop it. I’d need to make a good-sized jig and make a couple of sets to get confident on the consistency -- meanwhile my mandatory car work would standstill. I did find a place that does reasonably-priced CNC bending, but you have to send them a pattern. I have no time!

Post some pics of where the GV falls in relationship to the current exhaust and crossmember, etc.

The Hedmans actually have pretty decent angles coming out of them for home-built pipes, I think I mentioned that in one of those threads.
http://www.cbodydrydock.com/forum_viewtopic.php?6.22000
http://www.cbodydrydock.com/forum_viewtopic.php?6.22001

Yeah those adapters are a joke. I could go to a 3" pipe because I have a 505cid in the works but the 2 1/2 is plenty I think. I bought 1/2" thick stainless steel collector rings so I can sandwich the RemFlex gaskets. I know all to well about crawling under the car for an exhaust leak repair. I figured with the 1/2" thick flanges, I would be safe for the entire life of the exhaust system.

I'll check out your links and see what i can gather.