For those on a budget you can just purchase one of these safes:
6 3/4" H x 6 3/4" W x 9" D with digital and key lock, will fit under the back seat, $24.99:
Harbor Freight Tools - Quality Tools at the Lowest Prices
8" H x 7 7/8" W x 12 3/16" D with digital and key lock, might fit under the back seat or in the truck bed, $39.99:
Harbor Freight Tools - Quality Tools at the Lowest Prices
9 7/8" H x 13 3/4" W x 11" D with digital and key lock, might fit under the back seat or in the truck bed, $52.99:
Harbor Freight Tools - Quality Tools at the Lowest Prices
4.9" H x 8.1" W x 12" D with hand-print opener and auto-opening door and lighted interior, $99:
Harbor Freight Tools - Quality Tools at the Lowest Prices
This store has tons of other cool things for trucks as well, and if you live near one of their outlets you don't pay shipping and they sometimes have stuff on sale. I got the $39.99 safe above for $19.99 a few months ago. Bought about 8 of them just to sell to friends at cost. Good place to shop.
