I bought a second FJ55 as a body donor, and want to take my rusted out body, throw it on that, and make it a rock crawler. I recently inquired about a set of Dana 50/Sterling 10.5 from a F250, for $300. either way I go (knuckle swap/longfields vs built dana 50) i'm building out the axles. both axles are 30 spline, toyota axle is a 9.5" gear, Dana is a 9" gear. Tire size is TBD, but probably closer to a 37". what would you do?