Rear end question

[Bradydz]

I feel my rear end gears are just too low for how I drive my truck. (daily driver). I've got really great acceleration, but not too great of a top speed, around 80 in high RPM (no tach, low gears I'm sure, somewhere around 4.56. it's not the stock rear end, but I was not the one that put it in). What gear ratio would be best for me, with the stock 4-speed and a 355 SBC engine? I still want somewhat good acceleration, but a better top speed.