I did mine earlier this summer. Not as good as this one, but I went to the auto parts store, they have "strip" LEDs in 2in, 4in and 6in varieties. I put a 4in above each cupholder (self stick tape) and two 2in ones under the filler cushion shining down on my sub. Then got a 12 in neon tube to put under the dash. I'm debating adding some in the speaker grilles, and I think you may have talked me into it. Did it all in red to match the boat.
2006 X-2, MCX, Slate Grey w/ Pro Tour Red accents