nerfherder78 is correct, you can bolt in any 71 to 87 Dana 44 or corporate 10 bolt axle. Since your truck is a 69 you have a closed knuckle axle and although it may be possible to fab up a convesion you will be much better off finding the later model axle..much easier to find parts for and also a much better turning radius over the closed knuckle axle. Also the reason I left out the 1970 axle is because it is a 1 year only axle..open knuckle but has drum brakes, these can easily be converted to disc using oem parts.