Rebuilding a 65 273..I need some help.

Sorry to hijack this thread but these seem to be the guys to ask. On a 67 273 2v head. Can 1.6 and 1.88 valves be installed and used and does the block need notched? My engine is .060 over. I have a 2v engine that's been rebuilt. It has dual ext and a 4v manifold. I'm thinking of swapping in a cam, and port matching the heads, intake and adding the bigger valves and some port work to pep it up some. Also thinking about milling the heads in an attempt to get closer to 9.5 comp. Your knowledge and exp is much appreciated. Thanks guys.