OK here's a little trick worthy of notice. I was in a wrecking yard in Oregon a few years back and there was an '81 Celica with a 22r. My '80 pickup had a working but nasty distributor so I pulled the distributor from the Celica to maybe use on it. I had to change from the square Celica plug to the round truck plug, but I noticed quite a seat of the pants difference. Not huge, but certainly a bit quicker reving and liking the upper rpms more without losing anything on the bottom end. Upon further inspection I found the weights and springs are different in the Celica distributor.
My vac advance on my 22r distributor was not working. A vac advance was like $160, a reman distributor was only like $130, so I ordered the Celica part instead of the truck part. Sure enough, different weights and springs. Instant re-curve kit!
So be sure and pull Celica distributors when you see them. They make the 22r more "eager"...