[KobraKarl]

Duane ,

I believe the concept was in full swing in the late fifties, but for a horrendous wreck killing dozens at ......(not sure) Le man, or some other big venue.....in reaction to this, the engine size was reduced to 3 litre (I think)for several years.....Giving Carroll shelby a chance to ambush every one....(no disrespect intended)

The 57 tipo 450 S is a terrific example ....of a pre Shelby car with a MUCH more sophisticated suspension and dohc engine....although I think it was transverse sprung.

If you have had a chance to see any of the "By design "series on Speedvision", you may have had the chance to hear a 450s still in race tune......Man what a sound !!

KK