I go to samm sound in west caldwell. These guys work on high end cars like porsche, BMW, mercedes. They have great products and do some really nice custom setups.
I think the V-1 steath radar with ipod jack both installs for around $130 or about $75 bucks if you do them individually.
Check out their web site
http://www.sammsound.com/content/home.php

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Current cars:
03 BMW X5 4.4i NAVI (Dinan software upgrades-tranny and Engine ECU, 4.6 body kit w/ 20's staggered wheels, aluminum running boards, M3 SMG steering wheel, eisenhaus race exhaust, predator angel eyes, 6000k HID fogs, hardwired V1 radar)
06 Honda Odyssey EX-L RES NAVI (4300k HID's)
00 Mercedes S430 SPORT NAVI
08 Honda Accord V6 NAVI sedan (4300k HID's)