6.2 Heads and oil leak question.

[DukeBoy88]

I thought my rear main seal on my M1008 was causing my leak but I've now found I have oil leaks at the rear of both heads. I may purchase the UV dye to make sure, but my questions are:
1. Does this sound like more than just a head gasket change?
2. If I have the heads removed what else should I do while they are out? (60,000miles)
3. Is the only advantage of 6.5 heads on a NA 6.2 better cooling? Or would it be worth it If I plan to add a turbo in the future to make a swap now?

My truck runs fine otherwise, just want to get rid of the little puddles.
Thanks in Advance.

 

[BlueBlazer]

Are you sure the leak is not from the vacuum pump gasket located at the base of the vacuum pump?

 

[DukeBoy88]

It's possible but the oil stain is from the head mating surface straight down, like it was masked off or something. I probrobly should get the dye.