Pro Modified is the most popular class of cars in drag racing today. From fat-fendered 40 Willys with superchargers sticking through the hood to radical Lamborghinis and 'Vettes and guardrail skirting ...

Roots-type blowers — which are different from centrifugal or twin-screw superchargers — frequently dominate the front ends of modified muscle cars and street rods, especially dragsters and similar ...