i have a 1965 1A-1B- 1C EZ Shift i would
like to swap out for a 1988 3.0 alpha one that is in a junk boat
Ayuh,..... I doubt the hole is exactly the same, but I believe you'll only need to drill different holes, 'n grind out the keyhole abit in places,....
I'm pretty sure, you won't have to fill in what's there, 'n start over,.....
But I've never worked on a A-B-C drive either,.....