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John, Do you think it matters if the front drum clutches are in the rear drum also? thx matt s

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The front discs usually have a waffle pattern to allow fluid to be squeezed from between the discs during engagement, the channels in the waffle pattern reduce the actual surface contact area but this is a necessary tradeoff for good application.

The rear clutches aren't applied under power and therefore don't need the waffle pattern so the reduction in surface area has no tradeoff benefit as it does in the front. A flat pattern with occasional diagonal slots and metallic lining is the traditional rear disc and offers the maximum surface area.

My , I'm sure some others will disagree.