I have a 1985 KDX200 had a broken magnet and one of the stator coils is wrecked. I purchased a basket case 1991 bike with a flywheel and stator. Can I just slip the '91 stator and flywheel on the '85? There is no problem with attachment points or connectors, but has there been any change in the timing or any internals/electrics that may affect how the '85 performs?