Changing to Doug's D453s

I have a set with a 4 speed. Other than modifying the Z Bar (required) and the headers hitting two nubs on the bell housing at the 3 and 9 o'clock positions they fit great. Now mine did leak at the welds at the ports and I had to send them back but they honored it and shipped them back, or sent me new ones. Its easy to see black soot on the shiny ceramic. So keep you proof of purchase.