I see a question posted back in Sept 05 about relocating the crossmember. If you are changing out a TH400, it has to move. Mine went all the way forward to the most forward holes. Be sure to consider this before you start. I ran into a problem with the crossmember interfering with the flanges on my full length competition headers. By then I was fully into the swap and had no choice, but to continue. Ultimately, I had to replace the headers with shorties. And that precipitated replacing the entire exhaust system.