Check Defender (
link to Forte Spin Pole with class legal piston ends on Defender website). I was able to get a discount on the Forte pole via the Defender annual sale in the spring. I actually picked up the pole at the Forte factory in Ledyard, then went shopping at the Defender sale in Waterford, CT. If you want to change the bridle from D-ring to standard, it will be a custom order but Defender will work with you.
I spoke with Clint Rand at Forte when I ordered my spin pole to give him a heads up about the Defender order. I had the pole built with custom vectran bridles that have bungy cords inside so when not tensioned, they sit flat against the pole and don't flop around.