Well thanks for the comments. I will look into it. I still havn't installed it yet and it will probably be a couple weeks until I do becasue it's my GF's Bday and Anniverary soon so no dough (she gets priority in these instances)
EDIT:
http://auto.howstuffworks.com/question219.htm
Check this link and show me a car battery for Mercury Cougar that has better RC (Reserve Capacity) and More CCA (Cold Cranking amps) than the Optima Yellow Top
http://www.batterymart.com/battery/D342F78-950.html
I looked into the DIEHARD that I was going to get and it had about half the CCA than the optima that I ended up getting.
I don't think that I am going to have a problem with using this battery.