Were there ever any Yenko or motion cars built that had A/C ?

[Unreal]

Another issue, which I had to deal with on my tribute car, which will be an air car, since my car was originally SB with air. The 840 heads do not have the three bosses for the lower A/C bracket. It has the upper forward one, but not the upper rear one, or the lower one. I modified an original big block bracket, to pick up two manifold bolts. It works, and looks stock from the top of the engine, but if you look close, you can see the fabrication. I don't know if all Yenkos used 840's or if the last batch used the 291's. Did the 291's have the bosses?