I have a friend who tried something like this with a 250 quadrunner. He had access to everything a welder, plasma cutter, grinder and everything else in-between. Needless to say, buy the time he cut up the frame and widend/exteded, mounted up the shocks, he gave up. Now I'm not saying it can't be done, but it will be a ton of work to make it up.
Good luck man.
Yeah, ive been thinking about it and im not going to widen the suspension any. Just the frame between like the swing arm and the a-arms, just the middle. That will be where ill put the roll cage, seat, and motor.
And im also working it around my budget. I like the 250 4 stroke because its all there, so id just have to work it into the frame and most likely not have to work on the motor or anything. If the banshee parts are going to be cheap im going to use them. If not im just going to work with what i have them later on start making it better. The nice thing about this is ill be able to do a lot of the mods that id do to a blaster, except for the motor.