Hey guys...another question. I am building a Venus 4o with an OS 46ax. Looks like I will need to use a Pitts Style muffler in order to mount the engine on its side. Is there any real difference between Bisson and Slimline? Will I be dissappointed in the loss of power(so ive read) compared to the stock muffler? Any suggestions/tips would be appreciated. Thank you!!!