The rear is fine - lots of room:
The fork is a DT Swiss XRC RL100 WC and I have a contact that can modify the fork to fit a 650B/27.5 wheel but after mounting the front wheels I'm a little bit confused about the need for a modification. There is room - the sides is no problem but I'm a little worried about the top of the brake arch. Would you ride this?
The bike looks good but damn the 620mm handlebars feels narrow after spending some time with a 700mm handlebars

I will ofcourse mount some pedals before I ride the bike
