ASW R&D Machining, Scott Wigginton, he is making the Go Power Wheels, 4" or 5" fronts, 5" rears, sells them in complete sets. These wheels are from the original dies from the same casting company that did the original wheels back in the '60's. He just did his last set that he is going to do so if you want a set call him. 408-748-6949,
aswinc@aol.com, google aswinc his web site will come up.