Thanks, Dwayne. This whole aluminum head motor building for my customers started from your recommendation on the stealth heads. The cost of reconditioned iron heads vs alum head and compression ratios advantages all works in the same direction for the good. The clone A12 I’m building now is better off with the stealth heads. This new build is not restricted to looks or cubic inch. The cost of a used crank and rods and reconditioning gets right up their to a new rotating assembly from 440 source and a stoker kit is the same money. So I looked at the 240 trick flows but have not looked at the Edelbrock yet. Would the trick flows in stock form be ok for a mild street car with a power brake sized cam? Would the benefit of a mild port job on the trick flows be needed for a 4.15 stroke motor.