340 upgrades.

moper
i forgot to mention the heads are marked "X". now i read that they should be j heads for this year so who knows what may have been done as far as the heads go in 34 years. given that, are the X heads worth just freshening up. i heard they flow pretty well as they are. to make things even more confusing for me i read somewhere on here that some of the X heads actually had the smaller valves versus the 2:02. is this fact or fiction. so many decisions!!! lastly what do you think about the factory intake. good or bad??