Any ideas for meatier exhausts?

Ed, I question your exhaust reccomendation. Since the exhaust gasses cool substantially in the muffler dont you wanna go smaller to increase scavenging?

Like run 2.25 to the muffler and 2.125 (2-1/8") from the muffler out? Or are you reccomending the 2.5" out for more sound?

btw I watched your vid and my nipples are now semi hard as well.:glasses7: