Dana 44 flat top knuckles

[Ron]

I'm doing a tech page for an International 4X4 club. The subject is converting to High Steer on a D-44 equipped Scout. For this conversion I replaced the Scout knuckles with Chev "flat top" knuckles like the ones in the picture. The drivers side came with the 3 studs, the pass side had to be machined flat than drilled and tapped. The spindle bolt patteren was changed to 8 holes also. I found the knuckles in a junk yard and I do not know what vehicle they came from. The question is, what exact year truck were right and left flat tops found on? I'm thinking like mid 1970's 1/2 ton but I would like to less vage in my write up. Thanks