No kidding? I admit, I know very little about the poly A motors.
This '66 I'm looking at has the poly motor in it but in all honesty I wish it had a LA or B motor in it - something that I am more familiar with. But the car is nice so I just might have to learn to live with the poly motor.
In the mean time I'm just going to stay tuned to this thread and ride BigUgly's coat-tails to see what I can learn about different manifolds for the poly motor.