The 60 had a 4:44 rear --and it needed it, once you get used to winding it out to 5000-6000 rpm to make the car go it became fun, no problem doing 70 on the parkway, downshifting when you got below 2000 rpm. ---there is a reason it was called "the gutless wonder" ---build the engine with careful attention to balance, ---at least to factory production of 1 gram, I have had factory boxed sets of rods and pistons that were all the same weight(less than 1/4 gram )
The 'a' (andV8 to mid 32)axle housings won't fit on the later banjo, A is smaller in diameter, and the 35-48 banjo is wider(32-34 is the same width), 32-34 axles work out the the same width tip to tip as "A"
the 4cyl A is mostly driven under 2500 rpm, the 60 wants to be above 2500 rpm, if you build it with a 5,or 6 speed and 4:11 or more ratio, and drive it like a sports car it could be fun, but building 60 hp into the 'a' engine would cost less and would feel like it has more power than a 60 built to 85 hp ---and wouldn't need the drivetrain mods to make use of the gutless wonder ---I am not saying this because I don't like the 60, it just that it is different than the A and it's bigger brother.