727 pan question

Any good aluminum pan you buy should already come with the filter extension, filter, gaskets, bolts and drain plug. I bought this one that increases oil volume by 2 quarts, installed no leaks. I doesn't make much sense to me to add an extra volume oil pan and not locate the filter close to the bottom to be able to utilize that extra volume.

http://www.summitracing.com/parts/TFS-1009/?rtype=10