Vehicle- 1999 Chevrolet Lumina 3.1L 6V

Trying to change out the spark plugs as they’re very much in need of it. What’s the best way to change the back 3 at home and not going into a shop?

The back three are on the far side of the engine and I can’t figure out how to get to them without lifting the whole engine out. And i definitely can’t lift the engine like that myself.

Any tips? Thanks!