Swap Meet Score !

[Dan-K]

I went to a local Swap Meet over the weekend and scored an Eaton Detroit True-trac posi unit with 4.10 gears . I would have preferred a 3 series to run 3.42 gears but it is a 4 series carrier (#913A315) . My question is how ridiculous will this be at highway speeds ? . My rig is a 71 C10 with a 350/350 combo with 255-70-15 tires . The majority of my driving is in town anyway and I think the 4.10s would add some pep but I am worried that highway driving would be almost a death sentence to the drivetrain . Give me your thoughts / opinions .