[Jeff's bowtie's]

Front axles are the same direct bolt in up thru 87 and 91 burbs and Blazers 1/2 or 3/4 ton but after 72 the rear axle will work but you have to relocate the spring Perch but a set of later k/30 77-91 axles are a direct bolt in Dana 60f front and a 14 bolt rear