rearend gear?

I agree with all said, 3.55 are a great all around gear.

I'm on the fence if I want to switch my 3.90 gear to 3.23 which I have already. My tire is 26.80 inches tall, that brings the rpm down to 2414 @ 60 mph--however traffic on the expressways goes an honest 70 mph now, that would be 2800 rpm @ 70, perfect for long hauls, just try to keep it 3,000, even 80 mph would be only 3,200 before converter slip.