I can't thank everyone enough for all the knowledge and advice. I'm going to go ahead and replace both calipers with the ones mentioned! I'm going to also eat the core charge and buy the $12 kit and rebuild the onces I have at my leisure, seems to be good to have a set ready and for the general knowledge and price it seems worth it!

Again I appreciate all the help! I'll keep you posted on the install and brake-down / assembly when the new ones arrive! =D