Another 727 converter Q

The lock up "feature" never worked, trans acts like a pre-lock up 727. The stator and such must be good inside, just the lock up portion ain't working.
I never pulled the valve body to see if the cause was within there or not.
I truthfully don't care about that part of it though. If I didn't get the grind that I sometimes get when I go to start it, I wouldn't be asking about a different converter. Seems to depend on where it came to rest the last time it was shut off as to whether it grinds or not. I did swap starters just to see if maybe it had something to do with the old one. It didn't.
I almost bought a (think it was) B&M, out of the classifieds here/"Tork master" until I found out they didn't make them in lock up version. So I know the spline count would be different from mine and wouldn't have worked for me.
If the lock up starts working by virtue of replacing the converter hey great. If not then oh well.
So anyways, can you answer my question about what stall speed options I have, for a Lock up 727?