After looking at about every bike available, I decided to build a Felt 1903. I love the look of the bike. I had read that the Felt has some interesting issues when converting them. Luckily I found KW Machine Works (OldBiker) web site. He is you one stop shop for converting the Felt 1903. I ordered a bung/gas cap and motor mounts. While on the phone with him I also learned he was making hub adaptors, chain tensioners and a grease seal/spacer for the rear hub. Well I just had to have those as well. After a couple days of the Brown Truck Blues, they arrived. The pics do not do these parts justice. The machine work is some of the finest I have ever seen. This is going to be a fun build! I want to thank KW Machine Works for all of the help you have given, I am sure I will have a few more questions before it all said and done.