i also tried contacting him, no luck. to get a custom pipe from him would be the ticket, but hard to do when he won't talk to ya!
I am thinking there will be a difference but I'm not sure what, and hopefully for the better. after looking at my pipe while taking apart my 500 I realized it had a few different creases it different parts, so that was definitely hurting me as well. From what I've heard the best option I can do is just use a cpi and hope it doesn't hurt the power too bad, and from what I have heard it doesn't.