80's A998/A999 into Early A

transman said
If everything in the 65 is original, the conveter has a 1.550" pilot, a 122 tooth ring gear and an input shaft with 18 splines. The 85 Chrysler DID NOT come with the A500 overdrive series of transmission. The A500 and the A518 series did not appear (at least in Canada) until 1988 for the A500 and 1990 for the A518. What the 85 had would have been a 904 series transmission, with a lockup conveter, and the converter won't fit/work on your 65 A904.
If the transmission is only leaking at the cables, but other wise is in good condition, just re-seal it. If you are have problems getting parts for the 65 trans. send me a P.M. and I'll see what I can do to help. I'm not that far from your location.

The only place it isn't leaking from is the pan. Basically, fill up the tranny, drive for however long, no leaks. Don't drive the car for a week, entire amount of tranny fluid ends up on the ground. I'm sick of replacing seals and still having this problem.
I also remember the 80's tranny behind the 318 having what seemed like a taller ratio? I'm trying to get the best fuel mileage I can since I daily drive the car.