Under the Hood Other notable enhancements include the headers "in-house" fabricated of stainless steel, these utilize "stepped" sizing (pipe diameter increases as gasses get further from exhaust ports) and a 4 to 1 collector with a "fire cone" as all NASCAR header systems do. Free flowing to custom "Side Pipes" the sound is un-mistakable and un-forgettable. Radiator is a Griffin, made in South Carolina, and top choice of NASCAR teams A better look at the power plant. Looks like a Big Block but only 358 cu. in. Note mechanical fuel pump as required by NASCAR, fuel line is stainless steel braided with AN fittings, Ignition is MSD Billet Distributor and HVC-6 Hot Ignition box (under the dash). This motor has a Demon 650 double pumper carb. Note insulation pads on the footboxes.