Not something I would set out to build, but definitely something I can appreciate!
The front end is a really cool design. Are you using bushings or bearings on the pivot points?
While the tank is a good fit, it looks a little empty below and forward of it. Are you planning on putting anything in there or leaving it open? Or have you thought about cutting up the tunnel and dropping it a little lower?
Can't wait to see this with a seat and maybe a rear fender on it to see the final lines of it. Nice work!