My caprice looks like it is doin a major nosedive. Do I replace all 4 springs to get it back leveled out? I want a 1" or 2" lift so do I get bigger springs?

There's a chance that your springs are worn, so yes I'd suggest replacing them. The back springs are easy, just lift the car high enough so the wheels are about 3" off the ground, remove the shock mounting bolt, and voila'! The spring pops right out, no tools necessary (save for the 18mm socket/wrench for the shock bolt). The front is a different story.

thanks for the info. Im gonna get to that asap

Since you're trying to build an SS clone, you might want to find the correct springs. They are different. I've parked next to a civi Caprice and a 9C1, and the SS sits noticably lower - Has since Day One.