air cleaner solutions?

I'll try to get some pictures up soon when my dad and I get it finished, but I'm putting together a dual snorkel low profile remote filter setup. I took a standard 6" air cleaner base and top plate and have been hacking together and fiberglassing PVC pipes to make the plenum/snorkel setup. I would have just bought a plenum and saved the trouble, but a plenum alone is upwards of $75 and the PVC stuff so far has cost maybe $20.