Brougham and sedans were fastbacks while convertibles and coupes were notchbacks. All coupes and sedans were fastbacks with full-loop around window moldings. Streamliners again used the B-body shell with sloping fastbacks on coupes. He also briefly played drums for the Fastbacks. The first 252 GT350s for 1966 began as 1965 Mustang K-Code Fastbacks. The Fastbacks, and was later a member of both Love Battery and Supersuckers. Carroll left the group in 1988, and was replaced by Kurt Bloch from The Fastbacks. In 1980, McKagan joined the pop-punk band the Fastbacks as their drummer. Fastbacks retained the 1968-style taillights and rear panel. Fastbacks were a Seattle, Washington, punk rock band. The Fastbacks were affiliated with the scene, but were not considered either hardcore or punk. Fastbacks provide an advantage in developing aerodynamic vehicles with a low drag coefficient.