67 = non hardend valve seats

if you are going to buy heads have you thought about the mag heads with LA intake bolt pattern? EQ-heads IIRC and about the same price.

closed chambers,bigger valves,better port flow for untouched heads.

myself i like a 360 head on a 318 and shave .050 off for a CR bump,mild cam and lots more breathing on top end.

I did like the #302 head when I home pocket port and bump valves to 1.88/1.60 but still prefer the 360 heads over all.

the last set of #302 heads I just pocket ported the exhast side and bumped the valve to a 1.60 for a 1.78/1.60 valve set.