'69 RAIV heads should be 722, round port. Intake is aluminum 9796614. Block casting 9792506, 4 bolt main. Engine code WH for manual or XN for auto (Firebird), WW/XP for GTO. Carb 7029270 auto, 7029273 manual. Exhaust manifolds round port 9797038/9797074 Firebird, 9794035/9797075 GTO.
Hope this helps, and all this info is off the web so I cannot personally vouch for its accuracy.
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching
