Roger
it was real easy. The Vitesse De lorean from BTTF III is the one I used.
Remove the top body by unscrewing the bottom frame carefully because there are a lot of small parts attached.
Look at the wheels note that the front wheels are smaller than the rear wheels; why I dont know.
Next carefully separate the spoked rims from the wheels without damaging the spokes.
You note the nice axle troughs in the bottom frame for each axle. Take a standard Lionel wheel set and place it in the troughs ( I did cut away the existing axle hold-downs and then I glued a small 1/2 tube to fix the new wheels in the frame.
Next I glued the spoked rims over the Lionel wheels - large rear with smaller front.
Screw the top shell back on and your done.
