The King Cobra grip frame was used only on the Trooper Mark V ("V" frame"), the King Cobra ("AA" frame), and the Anaconda ("MM" frame).
Unless they made a T-grip for one of those, you're out of luck.
All the other Colt's have VERY different frames.
All you can do is contact Tyler and ASK if a Model 6, which will fit the Trooper Mark III ("J" frame) will work.
The problem is, the King Cobra and the Mark V and Anaconda have a rounded frame butt that's quite different from the other models which have full-profile square butts.