I have an 83 pick-up a pair of Marlin cases, a W56C and 35 inch tires. It has 4.88's and does 80 on the highway. My brother has an 86 4Runner with 35's, 4.88's, and dual cases. It does 80 on the highway easy. My 85 22RE 4Runner w/W56A, stock everything does 85 down the highway with 31's. I can't help but wonder if it's not the California emission junk that's killing performance out there. I live in Texas by the way.