DUAL SUB BOX 2004-2008 FORD F-150 Regular Cab Xtreme Enclosures $187.65 Custom fit sub enclosure for 2004-2008 Ford F-150 Regular Cab NOTE: Will not fit the 2004 Ford F-150 HERITAGE Regular Cab. The Heritage model will fit the sub box we have available for the 2003 F-150 Regular Cab. fits dual 8, dual 10 inch or... Choose Options