Hi Nate, welcome to the forum! That is a very unusual ser.# prefix if you ask me. Now I'm NOT a 1911 collector but that's such an unusual serial number prefix, I'd be hesitant to rework the pistol until I've found out the scooby on the prefix and year of manufacture, who it was made for, etc. Who knows? You may have a limited run of a special contract received by Colt back then, and it may be worth quite a bit. Much more than fair market value of the pistol with more a common serial number.
Hmmmmm...... Serial number prefix SFLDA.... South Florida District Attorney? Well, obviously not, but you can see where I'm coming from. Quite often really odd serial number prefix's may(I stress may) be indicative of a special contract run, implying low production, implying a possible desirable collectible firearm and one high value.
I hope I'm not steering you wrong. I'm more of a collector than a shooter so naturally that rang my bell.
Maybe there's a 1911 collector out there than can shed more light on the subject.