I'm very familiar with coilovers and have used them for many years. There are some as shown below that are exclusive to your "only" springs and some are in addition to the original springs on the vehicle.
But true standard or HD shocks alone do not raise or lower your ride height. Granted the new shocks are gas over oil and do have "some" compression resistance, but if you can squeeze them together by your hands, they will not do one thing to the ride height. But as shocks are designed to do, they do meter the speed at which the oil is transferred from one side of the shock piston to the other side.
Overload shocks come with springs around the shocks and are intended to ADD spring pressure to the vehicles suspension. These are know by many names and I'm really not trying to get into any argument about shocks, but they are what they are.
"IF" I go an add-on route, it will be the air bags by Air Lift. They've been in business for decades and have a great reputation.
And yes, that is my car in the picture above. I built it in 2000 and drove it a couple years and sold it. This is the ONLY vehicle I have sellers remorse over. I may have an opportunity to purchase it back in a few more years. Keeping my fingers crossed.
I do really appreciate all the input. It's great to hear what others have done. THANKS!