Hmmm, According to an old O.S. parts list, it shoudl work. The part number for the muffler body is the same, however, it's very possible that they've changed the part and kept the number. If it won't work, then we'd not know where you'd be able to locate the part. You'd have to check with those hobby retailers who sell to the engine collectors' market. They usually advertise in the back of the model magazines.

You could also place an item wanted ad here in RCU.