I like to use split duration cams with stock exhaust ports and you don't want to get too wild with int duration @.050 because of the low/medium compression. I'll offer one of many possible choices just to get the ball rolling on a solid grind :D........
I'll also throw out the idea that a 1.6 rocker ratio may be of some benefit since you will need adjustables anyway. Valve spring substitution may or may not need to be addressed if the 1.6 are used though.