I would like to put a nice 4 stroke in my Sig Rascal 40. Tower suggests .53 as the largest. What are ya'll using and how much did you have cut away. Pics would be great if you have them. Thanks for the help. Oh ya will I be able to use stock muffler on a Saito 4 stroke. I have never had a stroke - are they a lot to maintain?

rab