So I am currently using factory bose in my 07 Tahoe, I added an AudioControl LC2i with a Crescendo BC2k on a Sundown Xv2 12 (2.75cu ported @32hz), big three (KnuKonceptz 1/0 ofc) and group 31 battery. My plan for the sub stage is 2 upgraded SA-15's in a ported enclosure and then a bigger amp...