I'm going to try and check out a set of 350 heads this weekend: https://sfbay.craigslist.org/eby/pts/d/fairfield-buick-350-cylinder-heads/6980301414.html The pictures look nice but what can I do to visually inspect them in person? Should I bring any type of measurement tools? The seller does not know how much they were decked by but I'm worried about intake misalignment is they were decked a lot. I was planning to have my heads rebuilt but if I can talk him down a little this might be easier and save a little $$. What do you guys think?