So you want 2 go Big block...Read this first!

1965 was the LAST year of the slant six center link (there were not supposed to be any in 66 a-bodies, but I don't know definitively). 1967 got a new center link due to the extra width. The SAME link was used through 1972. There was a new link for 1973, which was flatter due to the fact that it mounted BELOW the idler and pitman arms, instead of above like all 72-earlier a-bodies. There was NO slant-only link for 67-76 a-bodies.

There are however sometimes clearance issues with the idler arm stud on the early link. The fix is a little massage to the CORRECT oil pan.