Got the Cub Cadet together and all is working great, the only part I needed from the Troy donor mower was the recoil and the guide for the starter rope that mounts on the handle bar.
Cub Cadet Engine model was a 12IS 05 0034 F1 serial no, 150115 56 39205
Troy Bilt Engine Model was a 12IS 02 0068 F1 Serial no. 150811 56 26274
I have an goof electric starter and wiring harness if anyone is interested.