I actually had a friend that ran an original PES in a dragster with a 292. Was a speck of a challenge getting it to run right on gas. Switched to alcohol and it ran pretty well.
Did not play with it long as the car it was used on was sold. I later found out that there were matching head lumps made specifically for the PES which may have made the difference. I still have the manifold and do not plan to use it again as I obtained a neat old clifford aluminum 3x2 high rise intake if anyone is interested.
