Re: A few questions for a 08 Silverado system build. Help me decide.
I also have a 2008 Chevrolet Crew cab and have been trying to decide b/w these box options as well. As far as fit goes I would say they will all work great as they are specificaly made for the '08 Chevy Crew Cab application. As far as choosing b/w them you really just need to see what the mounting depth on the subwoofers you are wanting to use.
Subthump --> 6.5" mounting depth w/ .83 cu. ft. sealed per side
Car Audio Factory--> 7" OR 8" mounting depth (depending on which of the 2 styles available) w/ .86 cu. ft. sealed per side
IMO I would go with the sealed box that best matches your subwoofers. If you have upgrades in mind for the future, I would go ahead and go with the largest box as it will give you the most room to work with considering possible future upgrades.
Just my $.02
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