The 420 or 465 are good trans, but I wanted the OD gear so I found one of the trans and the adapters needed. There is a good chance that the specific adapters needed came on the 427td. I will have to post pics when I get home as I can't access them at work(firewall). All 3 trannys have been in BIG trucks and should live fine in the 7. Just in case you were wondering, the deuce trans is basicly bolt in with the right bell.