Hi, new here got some questions on a 350 im working on
 

Ok so starting with a 67 Chevy C10. I am rebuilding a 350 4 bolt main that i pulled out of a 76. I have a question on what heads i can and cant use. I have the orig heads on it nothing done nothing special.
But i have 2 other sets of heads that i was thinking of useing.
One set is from a 65(i beleive),vett heads from its 327. There 202 heads. Im not sure if these heads will fit on the 350.
The other set ihave avalible is a set of 202heads thatare from a197X Chevelle not sure what motor. But i was told these shouldwork.
Im just starting this, so im not sure as to mixing heads and just looking for some one who could say, yes or no and maybe a little reason.
Thanks for your help