Police Interceptor Heads?

All I know is his dad worked closely with Dick Maxwell, Mike said that is why he was able to order the truck with the W2 heads. I saw the truck 2 days after he brought it home, and remember his dad said it had the performance W2 heads. That truck was scary fast and very LOUD!! I just remembered it didn't have catalytic converters. From what I could see that motor was never touched from the factory. Mike said his dad has had different cars from the factory with options that should not have been on those cars.