And I still hear guys today saying the HP manifolds are just as good as headers, lol. Of course they are always the car show type...scared to have to prove anything.
I always invite car show guys to the dragstrip and they never show...
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
