Noticing a lot of the guys with the early Mustangs block that off. The vent on the cowl. Most guys install a thin sheet of aluminum over top. is that something that would improve ET or mph on a 68 Dart. If not what is the purpose

Last edited by WHITEDART; 11/19/17 07:59 PM.
In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb