Help me select my first sub setup!

[slvrado28z 10+ year member]

get mylow10 fosgates if the are old school ones

 

[BertoM 10+ year member]

I'm really considering taking up mylow10s on his offer. How close are the manufacturers recommended volumes usually? For the Fosgates the recommended volume per speaker is .625 cuft plus .06 cuft for displacement, for a total of .685 cuft. Could I get away with .65 cuft per side polyfilled? It would save me a few hundred bucks and allow me to retain stock seat height.

Also, I looked up KnuKonceptz site, should I get 4 gauge or 8 gauge wire?