Ok so I took the 186 heads to my machine shop today.turns out they were not just pocket ported.they had a full port and polish.the machinist said they did a very good job so that' s a plus. But on the down side. 2 exhaust valves were ground down to far.so we decided to up the exhaust valves to 1.6. He also told me that the head surface looked good and thati should not need to mill them.we also ordered a cam. Ordered z 28 Springs and traded my stock converter.for a 2200 stall.. Thanks for all the advice guys.