At most swap meets there are piles of tuned pipes to be had for next to nothing. This because most sport flier never really could get then to perform well or didn't like the limited power band. Note in my posted graph how peaky the power curve look on the pipe verse open exhaust. Yes, the ones I show are high dollar put in the pursuit of power the old adage still holds true. There is no substitute for cubic inches other than cubic dollars.

All the best,

Konrad