Really Pretty Close!
First off, welcome to the forum from beautiful downtown Monroe, Georgia!!!
I went to the Kimber website and compared the Target Eclipse and the Super Match. At least by the posted descriptions and specs, it appears that the only real difference between them is that the Super match comes equipped with a magwell and has an ambi thumb safety. There may be some subtle differences in checkering/serrations and finishes, but in my book, not enough to justify the almost $1000 difference in price.
If you like the additional equipment that is coming with the used Super Match, then, if in good condition and functioning correctly, then that is the pistol for you. If you like the idea of adding your own custom touches, then the Target Eclipse is the way to go. If carry is in the list of proposed uses, I believe that the Eclipse would make the better choice. TETO YMMV!! Whichever you choose, it will be a really nice pistol. Let us know which way you go. Pictures are a must!!!
Monty, sounds like that used Colt that you picked up was a real steal. Besides, magazine don't cost that