What year are you talking? The short shaft boxes didn't appear until 67, which for 67 and up the V8 and 6 cyl steering linkages are the same.For the years 64.5 through 66 the V8 and L6 steering linkages are completely different, the only thing they share in common is the steering box, everything else is different. The tag numbers for 65-66 boxes with 16:1 are HCC-AX and HCC-AW.