Quote:

I have never seen a fatory hemi car that didn't have them and I have laid eyes on more factory cars than many have.



I've seen several original Hemi cars that lacked them, most common cars were 66-68's but I've seen others as well. In various applications some were lacking all of them while some were lacking just the fronts or just the rears. TB's were GENERALLY found under many HP engine equipped cars, not just Hemi's, especially 4 speed cars, most commonly used with 440 Six Packs (but not 69.5 cars as John said), 340 manual trans cars, and most BB A-body cars. I've also seen them in cars that should not have had them, a couple slant 6 cars for example. So, you just never know, there are only general guidelines when it comes to what cars should or should not have them.