I was wondering about getting a YZ250F and using it for mainly tight single track trails in the woods. I know I should be looking at a WR250F for that but they are not as powerful and a lot heavier. I was just wondering how much money and effort it would take to make a stock 250F into a trail bike that would be suited for trails and not really racing. I don't really care about a headlight but I would like to get a spark arrestor and maybe have some suspension work done. Any suggestions?