1.) Pull out pist-on motor, trans, and complete exhaust and cooling systems and recycle properly.
2.) Fab/adapt rotary engine and trans. mounts; test-fit(larger) rotary-specific radiator and proper oil cooler.
3.) Do 'whatever it takes' to mate up rotary engine/trans. to your driveshaft/rearend.
4.) Install your new engine/trans.; install proper cooling as per above; install a new Racing Beat header and rotary-specific exhaust system.
5.) Figure out how to hook up the electrical as needed.
Keep the rubber side down, and the shiny side up! :)