Anyone know the casting # of cast gt40 heads on 96 explorer?

I'm trying to order a set of heads from local auto parts place but there coming up with 3 diff. casting numbers to pick from for a 96 explorer.

I'm not sure witch to order. I just want to make sure I don't order GT40p heads as I already ordered my headers.

Any help here would be great.
 
pheads.jpg


these are p heads
m-6049-p303

if the pic doesn't come up.....
go to this link

http://www.burnouts.stangnet.com/custom.html