Cylinder Head decision

Well that cam is mild and would work well if you have a Performer intake. As per heads, you need to cc them as stated above to see what you will get. I will say with that mild cam, higher compression is a bit of a waste of money. Why do you think your exiting heads are hurt? If you wiped a cam lobe then I'd think you'd have larger issues with metal in your engine. If the engine is indeed tired then heads and cam will not do much good if any. Do you have compression numbers, oil pressure numbers at idle and cruise, does it use oil? If the motor shot then you should rethink heads and plan a rebuild or replace.