tti's wont fit 6 to sb

That isn't needed. You just need the right mounts as per the TTI web page.

Well. I had a Valiant 1969 Signet in my youth in witch I put an LA V8 in without changing the K-Frame. The Engine was not in the center of the bay like the one in my pals Dart GTS 69. These cars are identical in the bay except for the K-Frame...