List below is copied from FABO sticky. Hope they don't mind. I've used the 51515 on my smallblock for years. It says it's the same for BB which is sweet as I'm working on my 1st BB.

Part numbers for Mopars and price as of 12/23/2009
----------------------------------------------------
#51068: $3.68 - shorter/stubby version of the 51515

#51515: $3.45 - normal/standard Big or Small block 1qt oil filter, street version filters to about 20 microns, and has a bypass

#51515R: $6.33 - Race Filter, full flow race filter--no bypass, filters to about 60 micons, very high burst pressure

#51806: $6.03 - A heavy-duty 51515 with a built-in standpipe to keep the filter positively full of oil after shutdown in base-down mounting situations (slant-6, for example). These also greatly reduce oil spillage when removing a base-down filter at oil change time, see here and here for more info

#51773: $4.97 - An extra-long 51515 if you want your filter to hold two quarts of oil and have the space for it

#51076: $4.80 - Heavy-duty replacement filter element for factory optional taxi/fleet/police replaceable-cartridge oil filter

#51085: $3.78 - "Super Shorty" Mopar oil filter, 3.79" tall (the 51068 is 4.338" tall, the 51515 and 51806 are 5.18" tall, and the 51773 is just barely shy of 7" tall)