I just picked up a nj street legal wr450 that was locked up. Most likely going to need a crank jug and piston, but I was wondering if anyone has an info on direct drop in motors or one that will fit without a crazy amount of fabrication. For the price I paid it's worth using as a roller, I have an 02yz250 also and was curious if that might fit, or if anyone knows of any others that could fit, 2 or 4 stroke. Nj is hard to get street legal dirt bikes but there is no inspection so nobody will know what motor should or shouldn't be in it as long as the reg matches the vin and I have a plate on it. Thanks for any input.