RobDog117,
In addition to all the recommendations made by others, some dealers you might want to check out on line are:
www.soundcity.com
www.sounddomain.com
www.soundhabit.com

All of them offer a wide variety of car audio gear at very competitive prices.

Personally, I purchased most of my system from Sound City & Crutchfield, so I can highly recommend both of them.

1999 SVT Contour, #2140 of 2760, Tropic Green - Medium Prairie Tan
Koni Sport struts; TSW Blade wheels; Nakamichi, a/d/s/, Boston Acoustics, Infinity I.C.E.

1989 Saleen Mustang, #89-0408, too many mods to list here