how to safely remove a gas tank in the driveway?

[Nodnarb76]

I'm trying to decide what is the best way to go.
I need to swap a fuel pump on my 87 Suburban with a 40 gallon tank.
It currently has about 20 gallons in it.

I was going to pay someone to put it on a lift and swap it for me, but being cheap and wanting to do as much myself as I can, got me wondering if anyone has a safe, easy wat to remove a fuel tank from the bottom?

I was thinking of rigging something up on my floor jack to help lower it, but not sure how to make sure it won't slide off the jack.