Unfortold "Carb Spacer" Power?

In a recent issue of Car Craft they did an article on "Low Buck vs High Dollar" speed parts. Items covered were things like standard heads vs CNC, 2.5 vs 3.0 inch exhaust, and early dual quads vs RPM air gap. All were tested in great detail with some pretty eye popping results. But the segment that really grabbed my attention was the four hole vs tapered carb spacers. This is power that seems really cheap to obtain but I feel is overlooked in many applications. If anyone could shed some light on the topic it would be greatly appreciated. Their test mule was a small block Chevy stroker. I'm debating going with the four hole 1" spacer made from that Phenolic plastic on a 360 seeing 6,000 blasts. Let me know what works!
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