[Mike C]

Transmission? 3.73 and 35's should be a decent combo. I run 35's with 4.10 and SM465 in my Jimmy. The Jimmy we are screwing together for my teenager is getting 3.73 with a TH350. With converter slippage, they are both probably equal in terms of highway RPM.

Maybe a cam swap to get a little more cruising RPM torque will make the difference and a lot cheaper than swapping gears in both ends. Dual exhaust, HEI and good tune.