Gdonovan, I'm putting a TKO600 in a '67 notch. Bought it used out of a late-model Mustang. I had to cut out and fab a new crossmember as well as a tranny mount. I modified the transmission hump quite a bit just to make sure I had enough wiggle room and a good pinion angle. If you decide to go this route I'll be happy to share the pics I took along the way.
Scott
Thank you, if you could please some pictures and details.