I recently bought what I believe to be a wr450, but it maybe a 250. I tried decoding the vin but motoverse website is down and all the other ones so not provide much information. What makes it more difficult is that the bike has been modified in its appearance aswell. It is a 2004 model. Any sure signs between the difference? Also, I'm new to the bike word but I'm mechanically inclined and very interested in learning about this new bike I have.