The geometry stated for the frame is indeed different.
55mm of BB drop. As the frame was built for modern parts, 130mm rear spacing, cableguides.
That is way higher a BB than I think would be necessary.
While Chuck Schmidt is concerned about the BB shell cut out design, if it had a cartridge BB assembly, (Pino or Phil wood being on topic and come to mind quickly) then the extreme cut outs are less of an issue.
If I had built it I don't think I would sell it from a liability perspective.
John Jorgensen
Palos Verdes Ca