I found this while searchingr old U.S. V-twin racer info.
This is a new build but as close to a Exclesior Super X as he could make it without blue prints.
The web site is hard to sort through but a lot of info there if you take the time.
It suddenly stops in 2016 so I do not know what happened to Paul Brodie, or the bike.
He write at one point it had a little over 70 rwhp so he estimated at that point is had 85 gross hp.
Edited by Bob Riebe, 26 October 2018 - 05:53.