I know, I know currently has 4.10s in it now and its fine around town but get it up on hwy @4000 rpm and I'm still being run over so I'm going to 3.31s it has a M20 so its worse than 4.10x2.52 that I started with first gear ratio was 9.02 and now will be 8.34:1 (a little better than a 3.73 with a M21 @8.21) will this thing be a pig in the city now? or ? will it be tollerable? future plans is to sideline the 302 for a 383 and that should be fine with 3.31
What is your rear tire size now? Stock?
Larger tire will help, but only a little.
It is up to you, but I am not sure if I had your setup that I would drop all the way down to 3.31 with a 302 engine.