Just saw your thread while searching for info on converting my front drums to disc. I have a 68 Ventura, 400ci, 2bbl. It does have the THM400 and I believe Keith is correct on everything he posted. I converted mine to dual exhaust but kept the 2bbl setup. Performance is fine unless you really want to push it.
I also converted the 14" wheels to 15". I really like the difference, not so much wallowing but I have one issue and that's radial tires on these original wheels. Crappy. I'd like to get some bias ply tires but money's short. Of course the other option is to by new rims designed for radial use. They can be had even in the Rally II design but I like my old rims.
At any rate, nice car and I love your build photos.
