Well the big filter yea thats probably good, never ran one personally because there is no napa's local, not really saying anything BAD about it, i mean what do i know, i'm only 15 and i've never ran the big filter on any of our trucks
but making a BHAF mount and putting the stock filter back in it is stupid. thats what one of my local 1st gen buddies did. its his "BHAFM" (m=mount)