All the b-mods need to be equal with motors, tires, rear-ends, 4-bars, carbs. Easier to tech keeping everybody on the same page. I know the sportsman guys want to keep their cars and make them b-mods, Street stock guys want to use their 6000 dollar 355s. BUY a used A-mod run a 360 with a 4412 carb, run one compound tire. TEN IF you want to move up buy a bigger MOTOR. Kind of like a Crate latemodel and move up to a Super. Don't matter if you wreck it, still costs you money. TECH is the way to keep it fair,P&G the motors, check carbs, tires,and everything else should be the same, except the drivers knowledge, and driving skills.