Looking to add a limited slip to my 2003 Ranger 2wd 2.3L. Does anyone have any suggestions as to what brands to check into?

 

call RACER WALSH and get a ford motorsport unit. since you have a 2.3L engine i'm betting you don't have an 8.8" rearend, but you do have a 3:73 gear. check the tag before you call. if you don't change the ring and pinion gears ; it's a pretty easy job. DO NOT forget the friction modifier.