I have a titled FZr 400 frame and bits if anyone's looking. Also a full FZr600 if you want to build a hybrid. Charlottesville VA
I ran an FXR 600 in an FZR 400 frame. I called the WERA office and they said this combination was legal. I also ran a CBR600 rear wheel so I had more tire options. I ran FZR400 race bodywork with the exception of an R6 tail. PM me if you want to know how I made these modifications.