I have what I believe to be a 1974 Wild Wolf. The body is not fiberglass; I thought it to be ABS until I saw another thread saying HDPE. Nevertheless, the beast is engine-less. I have tabs on a Yamaha 340 snowmobile engine I may put in here (it runs, has electric start, and a clutch). My question is what have others done for mufflers on their Attex? I'm not sure the expansion chamber will route properly to fit in the Wolf (the through-body port has been fiberglassed over, though that can be removed). I could make something fit but believe two-strokes like to have their expansion chambers. Ideas?