this is what i use,,jomar 100% no bypass competition filters..
http://www.hughesengines.com/Index/products.php?browse=search&search=jomar&searchmode=keyword&page=2&partid=23365JPP 9025
FILTER, OIL NO BYPASS SPIN-ON
SPIN ON OIL FILTER. 5.50' IN LENGTH. BE SURE YOU HAVE ROOM!!!
$13.95
Hi-Flow filtration system- 100% no bypass.
This is the only MOPAR filter available with no internal bypass valve!
100% NO-Bypass design protects engine from debris resulting from components failure!
Fits all Mopar "LA", Magnum and Big block applications.
Extra thick housing for higher burst strength (600psi!).
Standpipe & anti-drainback valve for added protection.
20-micron element for FULL filtration with a minimum restriction.
Up to 50% more filter area than other premium filters.
This Pro-Filter in independent test using Mobile-One 10W30 at 70º temperature, flowed 8 GPM with only an 8psi pressure drop.
This filter is 5.50" long and will not fit on the Dakota or Durango trucks. This fits great on all full size Ram trucks. Fits most older LA, B and RB engines but you should check before ordering. We cannot accept returns on oil filters.