I have friends that could not cruise with me last summer for the same reasons. That's why I had to have the A-500. with my 3.91 gear and low gears in the trans it should burn rubber and in OD it comes to a 2.70 final ratio. My 1700 to 2100 converter which locks up. I'm hoping for 20 MPG also. I just saw you are also from Iowa. Where? DSM here.
