Magnum 5.9L-- which motor oil/weight?

I'm getting close to firing up my Dart with the swapped motor (March deadline) and I'm going to change the oil before turning the key. It occurs to me that this is a different motor and I shouldn't take anything for granted...

Which oil types do the Magnum motors like?
What weight?
Do you guys run synthetic?

It looks like the good old Fram PH8A filter will fit...is there a larger filter that might provide some extra oil capacity?

Thanks for once again, tolerating my novice questions. :cheers:
-Mike