Found a box of un-used 2-rail wheels in my supplies sets from some past conversions.
Qty 54 wheels available or 27 pairs. No trucks available.
Wheels are .875" (7/8") at the wheel flange with an insulation plug on one wheel at the axle/wheel interface. The other wheel is in direct contact with the axle.
$2/axle or the lot for $100 + cost of shipping.