Quoted from dzorbas:

la_porta The stuff below is to give you some ideas as well...
mbecker I had looked at your thread a while ago, nice job! I did some similar things to mine - lit ball locks (clear with green lights), lit flipper buttons (red on the left, blue on the right), lit starter button, clear coloured bumper caps, post flashers that light up when you hit the pop bumpers and the slings. I mixed up my caps so I have 2 blue and 2 red and put them diagonally across from each other. I put Cointaker afterburner LEDs in mine. My entire machine has LEDs and I haven't had any issues. Also, based on Vid's recommendations, completely replaced the flipper mechs. Game play is so much better!
You can still get a new backglass. I got one from Mayfair (http://mayfairamusement.com/). It's a bit of an odd site, but Steve is easy to deal with. Not cheap, like $300, you just have to decide if it's worth it given what you've put into your game.
If you want new/different rule cards check here - https://flic.kr/s/aHskTVD8Zr. I'm not taking credit for the originals but I modified them a bit so the rules made more sense. You also have a 3 or 5 ball card depending on your settings.
Finally, where did you get those hinges for the playfield? I'm not sure I would want to remove the existing rails completely as they provide additional support for the playfield but that would make life a lot easier!
travish I noticed you replaced your speaker. Does it make a big difference? What did you end up putting in there?
Here's a video of mine with the changes - » YouTube video
Here's a video of the post flashers - » YouTube video