An icon in Pro Stock drag racing Bill "Grumpy" Jenkins used foam in his Vega Pro Stock . this started a trend which N.H.R.A. banned . The answer is : It works
Gonna have to do better than that. Used foam where? What kind of foam? Why was it an advantage? Why was it banned? Racers will do anything to get an edge, sometimes at the expense of their safety (especially back then). You know, like acid dipping the TransAm series cars until one of them in particular was so thin it developed cracks and would dent if you leaned on it.
