The '85 LTD and '86 SE-i have 500 watt stators versus the 350 watt stators of the carb 1200 models. I would submit that neither the LTD or SE-i stators will fit an '85 1200i.
Interesting dilemma though, the P/N for an '85 LTD is 31120-ML8-751, for the '86 SE-i is 31120-ML8-751 and the one for the 1200i is 31120-ML8-305.
According to Honda, the first 5 digits represent the part, the second three indicate motorcycle make and model, and the last three are the part manufacturer and any modifications made.
As slaghost mentions may need the flywheel (rotor) to suit; however, the P/N for the '85 LTD and '86 SE-i is 31110-MG9-952, and for the 1200i it is 31110-MG9-682. If you try it you will be the first to give it a go as slaghost mentions.
Good luck