I've been talking with a guy via email and we're supposed to meet up sometime this week so I can give him my stock crank pulley along with some measurements from my sho shop udp so he can make a udp. Not sure if he wants to start manufacturing and distributing udp's, but I can ask him about it.
And you can technically use the stock size belt with the udp, BUT I went to a smaller belt because my belt was slipping during the hard shifts because of my chip. I went with a gatorback 4060735. Stock size is 4060747.