Great build....
Can you confirm the Harley 4 bolt spacing. I have been told the bolt pattern on H-D trike rear wheels is 4x4.25" or 4x108mm. This bolt pattern was used on some old Ford and Dodge products. Also told that stock Harley trike rear wheels are 15x5.5" with 2.85" backspacing. Went to the dealer but they said they could not confirm or get that confirmed through HD MoCo Tech Services