I've had very good luck with 10" Dayton PA drivers from PartsExpress. The best driver to put in any cab, is the one with the specs to match the cab. That said, if cost requires taking a chance (or a stab in the dark), these drivers worked well for me in a retro-fit. They are cheap, and have great specs. They have a 12" (PA310-8) that should fit the bill.