I have done this twice and I used the stock 400 spool type mounts to perch my 452 low deck stroker into place with zero and I mean zero mods. I used 1 3/4 headers for B/E/C/ body (all of em) ZERO issues. In fact it was so easy and such a nice sleeper I would like to do it again and run in the 9's with the engine I have now--700+hp 470 low deck. J.Rob