If you keep the rest of your cooling system in tip top shape, and you don't see oil in your coolant. There's no reason to pull the head. If you suspect there is a gasket leak, pull the head, have it tested and go from there. There are several folks on this forum who have #14 heads and have been running them for years. Where you get into trouble is if the engine overheats. The #14 head cannot handle the great and it cracks. Truth be told, a #22 head can crack too (I ended up with one when I was looking for a new head for my car). There is usually a chain of events that leave a trail pointing to the head failure; Fan clutch fails, radiator is poor condition, wrong coolant, driver doesn't pay attention to the temp gauge, boom - temp rises and then boils over, no more coolant, cracked gasket then cracked head.

Drive it for a whole, keep an EAGLE eye on the temp gauge (80 is nominal). You can get the radiator fluid tested for hydrocarbons. Aldo, I'd highly recommend replacing the FSM and clutch.

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1987 300TD named Klause
1987 300TD named Spouse
1987 300D named Seabiscuit
1980 300TD names Chloie (now sadly gone)