Nova dude,
With you wanting to use the car as a daily driver, if I were in your place, I would either use the stock rear axle or go to a 3.08 or 3.36, but no taller than 3.36 or you gas mileage will drop off a LOT. I agree with Hank, I think that a TH350 would be a better trans for street use than a PG, but don't go crazy on the rear end ratios or your top end and gas mileage will both disappear. The Comp Cams 260H will give you plenty of torque right where you need it for the street.
