Ed,
The Senior Pattern Association (SPA) doesn't allow full wave tuned pipes? I'm way out of it as I don't follow any class of competition now. Rather sad if one thinks about it. My weapon of choice was the Page "Mach 1" on pipe and I thought is was dated when I campaigned it. Yes, a few of my last builds did suffer Curare-idus (bent stabs) It didn't help! I later flew the EUA1s and XLTs

The image thing was mentioned by the OP.

All the best,

Konrad