Then drive up the road to Bontragers, in White Pigeon MI they have a wole farmstead covered in RV surplus, you might tour the Pony Express T/C plant while you are there.
Just have a plan of what you need, how big each part can be, and make sure he parts you buy will work for you.
Returns are a bitch and hauling them all back there makes that even harder.
2001 GMC 6500 Topkick, 22' box, dropped frame, designed to fit into a 9' garage door. 3126 CAT 6spd Man Lo-Pro 19.5's w/ 3.07 rear axle ratio