I am only running two surround speakers, so I was hoping that the new(used) 8" Paradigm sub I got today I could somehow use as a midbass. With my svs 20-39PCi handling the real work.

So is there anyway?

Not sure what you're looking to achieve (the SVS will likely be much cleaner over its full range), or what it has to do with your surrounds, but you could run a "Y" splitter from the sub out.