Hi guys i have a question now i have a 94 ski doo mach 1 670 that cought on fire. So i went and bought another chassis the chassis is a 1996 ski doo formula 583. I didnt get the motor for the 583 but my question is do them 583 have the big plate for the motor to mount to the sled? Becouse im gunna stick my 670 motor on the 583 chassis and when i stuck the motor in sled the mounts for the 670 were different and that why i was wondering if the 583 had a plate. The wires were all the same and thats the only thing im lacking if it needs a plate if you guys can help me out that will be great i only bought chassis for $175 only missing the windshield it also have a studded track but let me know thanks guys!!!