The guy that sells the grips also sells them for bicycle use, which is both 7/8 not one 1" for throttle and one 7/8". Maybe if you write or call him and ask?
Or if nothing else, when you make the aluminium collar get some old 1" bars and make a breakaway handlebar like in the movie, I'm doing that one one set of bars. I machined one collar to be 1" on one end and 7/8" on the other.
Those fenders look a lot straighter than mine. there is a guy at the cycle swap that rolls fender straight, I'll get pricing this weekend, I some done too.
I see you also got the welded on kickstand, lucky, I like that style better, I've got both with the bolt-on style.
another donor bike finished on ebay for about 140.00 with correct fenders and frame.
Jaime, I'll be posting some more images of springers on the X1, I notices two different type of springers being used as I was looking at screen caps.