well, check and see which emblems fit? they dont have the same hole pattern...if its a 400 hood = scoops, 350 emblems dont fit the holes , unless they are re drilled...
if you have a "flat" hood , no scoops, thats a 326, 350 hood and someone might have added 400 emblems to it....your pic looks like you have a 350 ,326 hood...so if the car was originally a 400? then your hood is not correct...if it was originally a 326 car then the 400 emblems were added when they swapped engine...and If Im correct (could be wrong) only 326s and 400s were made in 67....