Just as the title says, will the '87 motor fit into the '88 chassis? I just picked up a decent, middle of the road as far as condition, '87 KX500. I have a chance at a clean '88 roller. My '87 had a rigged YZ490 pipe on it. I am having a hard time finding a pipe, so which years will fit my '87. Every listing shows '88-'04, and I've only been able to find '86 and older.