Bakerdude,
Great to see the better numbers.
Nice to have a car slow enough that a stopwatch is good enough, huh? (Well, sort of).

Looks like you picked up 50hp or so but youre still down maybe 30hp from where its running like it should.

As noted already, if you have the 55-64 "pumpkin" rear, I'd leave it alone for now and just hunt the swapmeets for a 3.36 or 3.55 pumpkin, then you can just swap. Theyre still around here & there, the rare ones are the posi units, 4.11's, etc.

Also a good chance at the swap meets to get a couple extra carbs.

Next steps I would do on the cars is
1. tachometer - to be in 3rd before 60mph you were cutting off where that engine SHOULD be making power, up to at least 4800rpm.
2. Weight - just so you know what youre up against.
3. Tuning, all sthe stuff noted already.

The stopwatch reports are fun for all of us to read so keep those up, it is becoming quite a sage. I am big on numbers instead of just "feels faster", etc.