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Turbo scorpion wheels would probably be the easiest matching set to run. SCH006 rears and SCH005 fronts. These are 2.2 and the offset should be correct. These turbo wheels use a 12mm drive, where the standard scorpion wheels use a serrated washer so stay away from them. https://www.kyoshoamerica.com...

Jeff's right. Not only are those wheels a direct fit, but I think they look great on an Ultima Pro.
The style seems to go well with those angular body lines and graphics.