Are all 2 cylinder Fuji cdi boxes the same, I need on for a 88' polaris Indy Trail with the 488 Fuji Fan motor. A friend just bought this sled and the cdi was smeared with silicone sealer all over. Don't know why but it looks like a breakdown waiting to happen. I have found plenty of liquid cooled boxes for the 400 and 500 engines on ebay for a good price. They look identical to the one I have now,same harness and plug. What will work on this sled? Thanks for any help!!!