If you ask people how to remove tanks, most will respond with remove engine, or lower engine, or remove this or that make room to pull the tank. Anything else except lift the body up a little bit. There are people like Mieczkow that think it is so labor intensive but the way it was explained to me it was a pretty fast thing to do. That is why I asked if anyone heard of this and if it was possible. I really have not heard of anyone mention lifting the body before to create access.
Now we are getting lost in the forest!
If you have your head off anyway then there is no reason to jack the body or pull the motor as the tank will come out of the drivers side just fine. The passenger side has never been an issue withthemotor in.
I don't think it is mentioned in this thread, but the method of detaching some of the body fasteners and raising part of the body off the chassis has been mentioned by me and others in the past. If you only need to do tanks it may be a reasonable way to pull the tank, and not a crazy amount of work.
We are seeing that there are different approaches and different opinions on how to proceed. I would agree that project creep can be an issue.
If you truly need nothing but a tank, I would agree that pulling the motor for the average novice would be overkill.
However if you are pulling your head and doing valve work and need tanks, I KNOW you are not saving any TIME by leaving the motor in. However, I also understand that not everyone has a 4 poster lift, chain hoists, compressors, and engine stands in their shop like Tom and I do to make this all go smoother.