Anyone know of any issues when running a basically stock 02 YZ 250 engine with 04 YZ 250 coil and ignition? I mean can I just throw a 02 YZ motor into a complete 04 YZ with no igniton problems. Just plug and play? Has there been any changes in between the years that may cause problems with the ignition side of things. The motors are very similar but is there a different black box or anything that may cause me grief?