Can i use e-body SS springs in abody?

...I know thats a common opinion that they are too high, but i have some 2 inch lowering blocks lying around that i could slap under there, or just make another set to the desired drop i would like if i dont like the stance...

I don't think lowering blocks would be a good idea, you'll probably wind up with bent springs or worse if your car makes a reasonable amount of power. If you want to lower it, make the adjustment at the front hanger.