Precisely. Instant [more-or less] OHV power for the Indian chassis.
That might be one of the machines constructed as a design exercise the first time Indian was going to be resurrected (by Floyd Clymer, if I recall correctly).
Sort of, it's a repro, right down to the original Duco blue colour, of the '48 Indian sent to the Vincent Engineering facilities at Hertfordshire for fitting with a Vincent motor, but that was before Clymer had entered the pictute. Clymer's really the father of the Indian badged Royal Enfield vertical twins. The Indian Motorcycle Company of Chicopee Falls was still under the presidency of Ralph Rogers when the Vincent re-engining was contemplated, which got the weight down from 550 pounds to just under 500, and the spead up fronm around 85 with the Bonneville flathead to abround 110-115mph.
Vincent engineering chief and certified genius Phil Irving's thoughts and recollections on the conversion *here.*
Now just where do you find a decent Vincent engine in this day and age suitable for stuffing into an older Indian chassis without suffering the outrage of the collectors and purists....
-archy-/-
There is someone in California but I hear he's basically a resto guy (and Muy expensivo). This may be the link for the operation in AU that is remanufacturing Vinvent motors but something tells me that some other guy has a complete motor supply operation up and running.(I usually run into this guy at the shop on weekends...he knows, I'll ask) www.classicmotorbikes.com.au/