Hi did you have any luck with the center link for your 69 Firebird? I'm looking for a center link for my 69 Firebird. I see Ames have one listed for a V8 (#FS132K) and one for a 6cyl (#FS132J) the one I have on my car is like the one in the bottom of Mushroomberts' photo (heavy contour - not straight), which sounds like a 6cyl unit. (My car was original V8 (350) maybe someone has put a 6cyl one in some years ago?)
Does the 6cyl unit work in V8?
FYI It is a power steer car and pitman arm is curved (think this is the original pitman arm)