If your box building skills and creativity are up to par I would say go with a 10", I chose the Diamond audio M6 because its works very well down to .30 cubic feet. Damn good bass and I can still fit 3 hockey equipment bags in the trunk.

2000 SVT Black/Tan #1633/2150 (a few mods) Alpine: CDA-9835, MRV-F540, MRD-M550 PG: TANTRUM-X 6.5 COMP all around. Some people wear Superman pajamas. Superman wears Chuck Norris pajamas. CEL currently: Off