[tuningmaniacs]

MrPbody: Thunderbolts fall into the class of "muscle car" (intermediate body, "big car" engine), but they were very limited in production. For all practical purposes, the term "muscle car" should be reserved for mass-produced cars like GTO, SS396 (Chevelle), Road Runner, Charger w/at least a 383, Torino or Fairlane GT, etc. Thunderbolts were certainly very fast. They were a year too late, though. Hemi arrived and Super Duty departed... Those two were the kings of their era.

That's what I thought. The Thunderbolts were limited for drag races not street cars. As far as I know i've read somewhere that the term Muscle Car was born in 1964 with the Pontiac Tempest GTO followed shortly after by the Olds 442 and Buick Skylark GS. I could be wrong though. I'm no expert in Muscle Cars. I just like 'em a lot.