Well the boss block also has some oiling upgrades as well "Revised oiling and cooling system passageways" And the cooling revisions as they say come from the nascar world "Siamese bore with drilled coolant crossover holes"

Here read this article, it everything is correct in this artical the boss block is pretty much ready to go straight out of the box.

Link: Ford Racing Performance Parts Boss Engine Block For Project Stolen Goods - Muscle Mustangs & Fast Fords Magazine