That's a nice looking prop hub. I am assuming that you made it because of all the aluminum chips I see on the ground. But if you didn't make it yourself, where did you get it?

I usually gut the stock mufflers and braze in two brass outlet tubes of 1/2" i.d. or slightly larger. These mufflers weigh the same or slightly less than the aluminum mufflers you buy.

Anyway, nice work.

AV8TOR