I had that same problem, the thing is the newer ones just bolt in the place of the old style. When I tried to look for them about 8 years ago I coulndn't find any.
Really? Great. Were they the correct rounded ones? I purchased the u-bolts from them, and they said they were correct but had no cross hair lines in them. Oh well- they work
thanks
My 65 had the square pointed stops from new, go figure. It's my belief that Chrysler had several parts vendors at the time and simply used what was in the assembling plant's warehouse at the time.