Rode witha dude had a sportster set up like that. Dude could damn near keep up I was on a bik almost identical to this:

The pipes on this one are way too long But shotguns are definitelythe way to go for me Just alot fuckin' shorter. love the look and, set up right, they don't drag. The Frontend on this one's weak as well. The seat geometry and a look is what i bulit most of I was building the 98" motor a bike steup like this. along a came dude with a blown motor and a Low-Rider. Shoulda stuck with the rigid. Selling the rigid was one the all time dumb things I did. Got the frame off a 3:00 AM telephone call was a stone stock '53 Pan frame with all tabs no bent or smashed tubes...
Was my third Panhead, and my last. it had a 84" stroker motor in it Sold it for a few bucks and the low riders Dumb

Dumb

Dumb

Also sold a vincent, not sure, Rapide? same bike and motor as the black shadow only one carb and less duration on the cams.