I once did an engine swap in a '68 Mustang and put a 351 Windsor in place of the 302. It had a C4 Automatic that we re-used (after rebuilding it) and one of the old parts we re-used was the 2nd gear band. It broke on the first test drive. Evidently it was a fairly common problem and I was able to remove the broken band and pass a new one around the drum and anchor it in place. That is the only transmission that I know of that would allow that, but I have never had to do that with any other.