I have seen them in off-road oriented trucks as well. I have also seen motive gears used in off-road trucks. However, the minute they go into a muscle car, there seems to be increased rates of failure. I have seen many sets of motive gears blow up in stangs. The only person I know that has used Yukon gears had a set blow up in his IROC when he was on the highway. Though, I don't know how well they were set up. I would recommend only buying FRPP, Pro5.0, or Richmond gears, even if they cost a bit more. It will be worth it in the end.