W2 cylinder heads

Thanks for the information guys! Not sure what I am gonna do yet. I have a short box truck frame with 6" lift and Dana 60's with 4.10's in them that he wants to swap.

I have to look at what he has but I know everything is new and just need to be put together. I have a 340 I was going to rebuild for my duster, but this might be a good swap for me.............I will have my motor and I will gain lots of room in the garage!