All the fel-pros I have seen have the rings in them.

 

I'm gonna stick with the OEM stuff...got buzy last night and fogot to get the vin, I'll try again tonight (although it's raining now lol)

 

while you have the system drained, if it still has dex-cool in the car I would highly recommend getting some radiator flush and flushing that thing out while you have the chance. No sense in replaceing the gaskets just to have the dex-cool push them back out again.

I recommended that to a friend years ago. He was having a new engine and transmission installed in his lincoln town car. The guy putting the motor in said it wouldn't matter and topped it off with regular anti-freeze. 1 year later the car is in my back yard over heating. I bought 2 bottles of prestone flush, and ran them through, then opened the drain on the radiator, connected it to a hose so I could contain it, and stuck a garden hose in the over flow bottle. I let the car run for about 3 hours at idle that way. Installed a new thermostat, topped it off with fresh anti-freeze, 2 years and 50K later the car has had no more issues.