My truck is a pro street deal with a narrow 9" **** rear and a four bar with coilovers. It would seem that if the front end width was correct on the Dakota for a tri five, the rear would have to be very close too. But a word of caution, Dakota rears are soft, probably the worst thing on the truck. I would look for a Torino style **** rear with a 5-4 1/2 bc. Don't forget, later 6 lug rotors will fit early spindles on Dakotas which opens up a whole bunch of options for rears. Hope this helps. Richie Z