RE: OMG!Just bought a Expresscraft Thunderbolt!
Well, so the 2 in band might be of better length then, giving some more torq too...?
The header had no clearance issues, fitted in the hull nicely?
Nice boat you have there!
edit: You have the pipe down low in the aft, shorter distance, mine will have exhaust tips on the lip of the deck. How much further that lip comes from actual transom.