Killerfind (Paperback) by Sharon Woods Hopkins

When Rhetta McCarter's '79 Camaro is destroyed in a fire, her best friend and mechanic Victoria (Ricky) Lane, finds a replacement, a "barnfind" vintage Camaro in perfect condition, except for one major flaw: a body buried beneath it. Later, Ricky is arrested when a second victim is found murdered in the same barn. Rhetta is convinced not only that Ricky is innocent, but that the two murders are connected. The police don't agree, so Rhetta is forced to fight her way through a labyrinth of danger and misdirection to find the real murderer before the killer finds her first.