Frank,
I hope you do not mind me sending this PM asking for a bit of info, guidance and possibly purchase a part or two. I have a '75 C6 that needs a separator plate(converter check ball wore/pushed through plate), I have looked hi/lo for a stock plate to no avail, since you rebuild so many C6 VB's is there a possibility that you would have this plate with no low reverse check ball port? If so, would you be willing to sell it(or a couple of them)? I have (2) '77-up valve bodies but since my trans has the low reverse piston with the check ball installed, I just don't know if installing the later VB would be a good idea(what to do with the low reverse check ball and/or port in the VB). I have heard conflicting advice, from "run it and it should be fine" to "you need the correct VB for the year used". What would be your recommendation? Thank you in advance. Todd