hi im bryce and im 17, i drive a Custom deluxe 20 with a fresh rebuilt 350 bored .030 over thats pushing about 350-375hp with a rebuilt TH350 3 speed automatic and a NP 203 transfer case thats 4 WD all the time. i also have a GM14 bolt FF rear w/ 4.10 gears and a Dana44 w/ 4.09 gears up front. i dont know what size tire yet cause im not sure what it can handle without getting new gears. any suggestions would be greatly appreciated. thanks