Gauge Package vendor and good installers in San Diego

[BWolanin]

Hello guys, this newbie would like to install the Isspro 3 gauge package (EGT, Trans Temp, Boost) in an '06 2500 in an over the windshield mirror mount (in the belief that the Isspros are the most factory appearing day and night). Is there any difference in the "package" you get from Diesel Manor or Genos, or other vendors that I should consider- would like to get something all inclusive to cut the install time as much as I can and make it less problematic. And, does anybody know who in the north county or general San Diego, CA area would do a great job on intalling this for a fair price? Finally, do these come with built in dimmers to control them separately from the instrument panel, and if not can this be done and how? Thanks for all the good information beforehand. Bill