[DAVID GAGNARD]

Do what I do when junk yard hunting or looking for engines,bring a small tape measure with your........I measure the width across the two front intake manifold bolts........351-W is 9.5 inches across center to center,302 is 7.5 inches...........This will tell you what block you are looking at since the 351-W and 302 heads are interchangeable........heads #'s and markings are under the valve cover,the only way to be sure of the heads are pull a valve cover............

David