Originally Posted by fast68plymouth
I never saw these in person, just the pics.

Things that are easily visible compared to earlier normal stage 6’s.....

- physically smaller chambers
- offset intake rocker required
- ex port opening cnc’d
- bolt on rocker stands required
- guide bosses in the ports are much less intrusive, especially the intake
- relocated oil feed hole to rockers


I actually have a set of those heads with the "2021" cast into them.
The story passed on to me, they're from a small batch of 25 or so.

R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04