I used washers lol... It's honestly the best way to fine tune the bumper gap. Once I get it just right I grind opposite sides of the washers and weld them together... Makes mounting the final time easier and they can't slide around then.
I'm building a full center console for 2 12" Sundown Audio Se 12 D4's eventually... Right now I have one running off an Alpine PDX 1000.1 and its silly how loud it is with the crappy temp box I made for it. Cany wait to run them both with 2 1000.1s... For mids I'm going to run Sundown Neopros off a PDX 150.4 once I hunt one down. And a kicker tweeter.
I installed my Pioneer AppRadio 2 on Friday and love the thing. Soldered all connections and used a GMOS-04 harness to retain RAP, chimes and onstar... Stinger pro rcas, and ASWC steering wheel button module. Have a wireless backup camera on the way too.... Backed into a 97 Honda del sol with 200k miles on it leaving the dark knight rises premier and did 1700 dollars damage to that pos and not a scratch on my truck... I'm a nice guy so I left a note at 2 am and paid to get that thing fixed lol. I ordered stretch fabric, fiberglass resin, chop mat, bought mdf to start the console build too. Some other odds and ends not worth mentioning I suppose.
Wiring.... Was lazy to go get shrink tubing so I just used electricians tape... Easier to undo I guess if I need to