Pull the cylinder head, yes, and the bores will speak for themselves. Also examine the cyl head for warps and cracks, probably run a straight edge over the shortblock too.

I agree with lietuviai, you are crazy to jump to wild conclusions on a completely destroyed engine when typical overheating never touches the crankshaft and frequently leaves the pistons, bores, camshaft and even the valves intact depending on how long the car was driven. Hell you might just have a blown head gasket and/or cracked warped head.

Then if its just the head figure you've saved yourself beaucoup dollar$. 2nd hand cyl head is helluva lot cheaper than an entire engine. And figure your original 150k shortblock might be good for another couple hundred thousand miles, assuming its properly maintained and whoever drives it pays attention to the guages. And another easy trick that any talented mechanic can do is hook up an audible overheating alarm if you fear this might happen again.