Just saw this list of '69 Indy class winners. Only recently ran across these pics of the H/SA "Movin On" '65 Pontiac 2+2, driven by Jack Briner.
http://classracer.com/classforum/sho...&postcount=101
The '65 2+2 was 421 powered. I think there were 3 versions. The base engine had 1 AFB 4-barrel. The other 2 had Tri-Power. The top option had more compression & a bigger cam.
Note: Some of the '69 class winners have been disputed. So, I can't verify anything posted on any list to be accurate.