Need to know if I have a '62-66 piece or a '67 and newer. I blew the reverse/low servo out again and now I'm looking at using one of the billet replacement upgrade pieces, but they are different between the early and later versions.

When I had the trans built, I dropped off 3 cores, 1 early and 2 late, but never asked as to which he ended up using, and that was almost 10 years ago. Any quick way short of pulling it down to check?