@Captn. I used a sheet of plexiglass and drilled them with a hole cutter bit. The bits come in different sizes so used one that just was larger than the hole in the tube. Then cut the rubber to fit the caps for the seal. Then added metal washers the size of the hole in the spine (1" or so I think) to keep the caps centered over the hole. Stays in place nicely.
05 BA, Goodwood Green, Chevy605 pipes , ai removed, Freak kit, K&N pods, 145 main/42 pilot / 3 turns out, bags and screen
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