Has anyone fitted a YZ250f or any 250cc 4-stroke MX bike motor in a Blaster? I searched around and saw other 'inferior' 4-stroke motors have, but I think this would be a worthwhile swap if it would work. It'd prob rip pretty good and be better in the trails. Light years in front of the 250ex, Z250 and Raptor 250... Looking into a bike for my g/f, and this had crossed my mind. (yes, I like hacking, welding and fabricating)