what crazy said to do with the center four intake holes will work fine, just is different angle on those four bolts only, no biggie
i would trade someone my 882's for a set of later model 305 350 heads 87-up only cuz i just want center bolt covers setup on my 76 engine, but i dont know when i would be able to afford mail on two heads, not for a little while at very minimum, and most likely longer than that for sure, hmm...
thanks
good luck