Need advice please.... engine/transmission swap

I have a 2015 Gen 3 - 325,000 - about 20k miles ago I did a fluid change and the transmission started making a clunking noise (so that is going down hill). The engine just started sounding like a flushing toilet occasionally and then clunking at idle off and on (ICE mode) and then yesterday tossed a error code p0303. Instead of spending the time tossing parts at the engine. I opted to purchase a "new" to me JDM ~51k engine/transmission combo (as the transmission is on the way out, the engine likely isn't far behind).... now the question comes in the best way to remove and replace. I haven't been able to locate any documentation on the best way to go about doing both. I am getting a married unit from the same car, so everything is still attached sensors etc. One is there any reference material to do a removal and replacement of both units together? (I haven't found anything yet myself but could be I just don't know where to look). I don't have a overhead gantry or a auto lift. I do however have just about everything else, engine hoist - transmission jacks, if I need to lift the body over the engine that is still possible. I just would appreciate help/direction on what is needed and/or instructions to follow be it youtube university and/or some other documentation.

I haven't found any great documentation on removing a 3rd gen transaxle assembly either, so this would be helpful if someone has a link to some good documentation on this possibly if there isn't anything with installing/removing as a married unit.

 

You ROCK!! Thank you so much - took me right to what was needed to start the process. Now I am just waiting on the engine/transmission combo to show up and well to get the old one out