As far as the cover and coin op I haven’t been able to find any replacement other than the cover listed on here in the parts section. It is not for a silver shadow but it will fit to cover the entire area. Meaning it will cover over where that side cover and coin op goes. I had the coin op and cover for mine so I didn’t look to much. For the bumpers it depends on what you intend on doing. I put k55 on mine because I don’t shoot with the over-sized cue ball that they were designed for. It has a tendency to respond differently off the rail than the rest of the balls. If you are going to use a standard cue ball then go with k55. If you are planning on using the over-sized cue ball then the closest thing to the original would be the k66. Even those aren’t exactly right though. The originals had an odd flat nose profile to try and make up for the over-sized cue ball. Hope this helps. When your redoing your bumpers make sure you check the t-nuts in your rails. Mine were loose so I had to replace the entire rail and bumper. Good luck.