The Wide Glide is a model in the Dyna family of motorcycles, which have different transmission specifications and mounting requirements. Installing the Softail transmission on the Wide Glide would require substantial modifications to the frame and other components, making it an impractical and potentially unsafe conversion.
If you're interested in upgrading the transmission on your 1985 Wide Glide, it would be best to research and choose a transmission specifically designed and compatible with the Wide Glide model to ensure proper fitment, performance, and safety.