Rate1
For smoke pump info goto:
http://www.tmenet.com/products.htm#ssp
I have my muffler but will have to think about what we can do for yours ??? possibly Slimline:
http://www.slimlineproducts.com/
but bear the type of muffler you use when you orientate your engine..I was hoping it will go in on its side but ut looks pretty close to sticking its head out of the cowling (YS 140).. If it needs to go it either inverted or at 45 degrees to remain isdie the cowl, may have to rethink the muffler.
Cheers