This may be a crazy idea, but I’ve been wondering if this might work. I am in the the market for some 15” x 8” steel wheels with custom backspacing and would like to run the factory FJ40 hub caps. I came across these 15” Bart wheel shells and was wondering if anyone has ever tried welding in some OEM wheel inners. I have some old nasty factory rims that I could use as the donors. It looks as if the ID of the factory FJ40 OEM rim is really close to the ID of the Bart wheel shell. With the price of the shell being relatively cheap, I may go ahead and buy one to see if it would be possible.