If they will fit Pro-X boards I would be interested in a set too.
How much of a PITA is it to drill out those flat rivets on the stock fishbones?
I'm not going to lie, It wasn't the greatest most funnest thing in the world to do, and you won't believe how flimsy the tunnel is without them.But I think the end result is worth the effort.
Be sure and P.M. Carl (meathooker) if you want a set.
Maybe you pro-x guys can get some measurement up so we can see if the fit.