Vehicle? SUV(2004 Jeep Cherokee). Space? Looking for 140-145 db, any GOOD suggestion could do that with two 12"s easily, or less, so 5^ft. Budget? Not really limited, so how about $2500 to keep the idiots from suggesting unnecessary garbage? Electrical? Depends on the requirements of the system suggestions. Honestly thought people here would have been able to give suggestions on a basic set-up for daily use that could be flexible enough to work in most vehicles and sound respectable. Not really a complicated answer required, just some different opinions and options.