20. Monster Customs

Location: Atlanta, GA
Specialty: Domestics, SUVs, exotics

Monster Customs has built a reputation stemming from their expertise in the 12-volt arena. From an aftermarket head unit radio swap, all the way up to a completely custom car audio installation with one-off speaker enclosures and lighting and everything in between, Monster Customs can do it all. In the ATL, they are a "monster" in the customization game. Ha! All lists need at least one bad pun...