That's so cool. He must have been a real crowd pleaser with such a bike!
I've been around the V twin Vanguard conversions on Cushman's, Mustangs and bicycle frames and they have all had two things in common great exhaust note and startling performance. A friend's Cushman using the 22 h.p. Vanguard easily held 70 m.p.h. cruise speeds on poker runs and had the sweetest pipes, but Bob's bobber is several notches and h.p. above that retrofitted Cushman! Excellent build. Rick C.