Police Interceptor Heads?

man you guys need to switch to decaf :lol: and yes, the big 3 always had back door stuff going on to supply racers and test parts. when my dad was working on Gunsmoke in the early 60's, chevy had James Arness as a spokes person, and they were always giving him loaners to drive. in 63' they gave him a mid-size something or other that he spent the whole time driving the piss out of, scaring everyone he took for a ride. my dad said that was the fastest street car he ever rode in. the only restriction from chevy was he wasn't allowed to open the hood