Originally posted by OffroadX:
Well, bad new folks. I was wrong. The first set of cats are the main cats, not the pre-cats. That complicates things a bit, but the loss of the post-cats wouldn't set off the computer, that's good. However, simply pushing the main cats down to where the post-cats were doesn't appear to be particularly simple, there's the matter of the 40-degree kink that is built into the post-cats to turn the exhaust horizontal that you would have to deal with, requiring some custom piping and flanges. You're probably better off going ahead and investing in some generic aftermarket hi-flow cats than trying to relocate the original ones at that point.
Brent
You're right Brent. I was thinking all along that there was more pipe before the cats on the factory manifolds. I just went out and looked and realized what you've been saying. So, these headers do move or eliminate the cats. There would be some custom work going on to install these. One of these days I might give SLR a call and talk to them about moving the cats and everything.