904 trans

The late 60s trans is fine. Low gearset in the 998/999 was brought about to help launch the heavy *** Fifth Avenues with weezer 318s off the line well. Most of the time, those gearsets are really too low for the light A bodies and really unnecessary. Couple that with the fact that the 998/999s are really gettin tougher to find and the 904 looks better. You can upgrade the 904 with everything to make it an A999. Even the low gearset if you want it. You can find everything you need here and cheap.

https://www.wittrans.com/default.aspx

The 999s had either a 4 or 5 disc direct drum. You can a 5 disc one there for less than 60 bucks, just as an example.