I called Penguin Amusement, gave them all the measurements and they made me a set of custom rails and bumpers to fit my table perfectly. The reason you have to custom order the rails is because there was no set bolt pattern for the IK pool tables. The spacing is different table to table and rail to rail. Make sure you get a new set of T-nuts while you at it. They threw them in for free when I asked. They are very knowledgeable and are more than capable of helping you.
Again, I’m not sure on the coin mech. I think you would just have to do a lot of hunting with a little luck and hope to find one. Either that or once you get a cover just find one to fit the space. I would think that if you had a cover and knew the measurements of available space then it would greatly improve your odds of finding one. It may not be functional but it would look appropriate. Good luck.
@Sunnytimes – Ill try again to post some pictures for you.