Bump up to the 3.73, put in a low gear set. I understand that all the drag racers with deep gears and perfect converters discount using the low gear set, but with a heavy, tight converter, mild geared street car, I think its the way to go.

I've got the low gear set, 3.89s and a 31 tall tire. Considering going to 3.73 if I keep spraying it as it seems rpm limited at 139 mph regardless of the ET.