How many using an A500 overdrive ?

Nope. The a bodies were history before the lock up trans/converter came out, by about 2 years
Sorry, I should vave been more clear. What I meant to ask was, are there any differences between a regular 904 that would have come in an Abody ( 1969 barracuda for example) and a 904 that would have come in a vehicle with a lock up converter?