Removing a 318 from a van

So the update for now is the engine swap is on hold. I drove the van the other day and it’s still pretty peppy. I’m going to work all the bugs out- aka fluids and filter changes and register it and then take it from there. Once all is done I will drop the engine out the bottom and swap it and the transmission out. I’m on the hunt for a rebuild able core for an over drive unit and possibly rear axle change.

The engine I’ve got ready that I could drop in - I do not want to pull heads or anything other than oil pan and pick up to take apart- so all though swapping thru passenger side is an option… I’m going to try thru the bottom. Less work in my opinion because suspension needs to come apart anyhow.
Thank you for all your advice and recommendations.
Syleng1