You may want to speak with Jamie at Fuel Moto about this, he offers a carbon fiber slip on muffler for baggers. The heat a few inches out of the head and at the muffler are two different things though.
CP 4.075 pistons fitted by Hyperformance
Woods 8 cams
Reworked 110 heads by nw guy
SE 58MM TB converted for cruise control
Thayer 3 stage oil pump
V&H true duals trapp mufflers
103.. on the workbench
Still runs like a champ
Being honest may not make you a lot of friends but it will always make you the right ones.