What about the guys like me that need to run OEM cast iron heads due to rules? I'd love to run a set of aluminium heads, but in truck pulling they don't like the aluminium heads.

Michael

93 W250 CTD getrag, Bosch 185 injectors, AFE air filter. Trailer puller, daily driver,

90 W250 CTD 727 with smokin 5" stacks. Off road truck

75 Dodge W200 440 4spd 4x4 locked front and rear, twin disc clutch, E85. Pulling truck