"Bulletproofing" a Chrysler 2.7, 3.2 or 3.5 liter V6?

The 3.2 and 3.6 does not have the water pump inside the engine. Very little problems with those other than the oil cooler leaking, usually from overtightening. Some early 3.6 engines had cylinder head guides that were to tight but that problem was addressed quickly. The 2.7.... That engine is a total pile of trash.