I hadnt heard of these Felt Abraham forks, so i did a search and they are similar to the Monark springer. Cool i never knew they made any. You should have a cool bike.
One of the problems with this motor is you may need to build a handclutch shifter like mine or modify a centriufgal clutch because i dont think these rev very hard and might not engage at a low enough rpm. But i plan to do more Villiers builds as well as CAMNZ, Silverbear and Fasteddy over in "DIY Section", so you wont be alone if you encounter any dramas