Cylinder Heads 101

BJR, what is your thoughts on the 308 heads? I am planning on a decent 360 for my Dart. Block and crank are a '72 vintage, want 9.0-9.25 CR, and a cam about 1 step above a '68 340 stick cam. The tranny is an A-999, the rear is an 8 3/4 with 3.55 sure grip(489 case). I have heard that the 308 heads are very effecient and require only minor work to get them to flow well, while "Going to town" on these castings is a mistake. What would you recommend :notworth: ? This engine will get proper machining done (including deck plating and balancing), but nothing too exotic that is only useful in such applications as drag or road racing.