you wrote: V-8 except 400: flat hood with 2 emblem holes, no holes in lower rear fenders.
Are you saying that a flat hood with two emblem holes is more than likely a 350.
yes, unless someone put a flat hood on a 400, unlikely though
also, do you have the front bumper? if a 400 (of course bumper COULD be changed too..) there will be a pontiac arrowhead mounted on the center or two holes there..
