Pulling from van tips ?

On my 76 dodge van I dropped the transmission and removed one seat and took it out the door. (360). I loaned my bolt on carb plate and a guy change my Dads 440 in his class C motorhome the same way. He bought one of those plates the next day.
I’ve heard of that but seems like it would be harder to do? Besides this van was in a boneyard with little room between the next truck . And I wanted to pull both engine and transmission out as one. They don’t allow jacks to be used so it was the simplest option.