if it was me and i was going to be putting a bunch of money into my machine for porting and reeds and whatnot i woudl prolly go that extra mile and get a new piston and rings also. but head milling is kinda outdated lol what you want him to do is redesign the head, its a little more money thatn jsut milling it but weeeell worth it.
ok well ive emailed flotek asking the questions i wanted to know so we shal see what comes back