Another leveling question.
 

Ok guys, need some input. I have my late dad's 97, 2wd, ext. cab, C1500 Silverado and I only want to level it by dropping the rear. I did order a 2/3 drop spring shackle set. The shackles have 2 holes but when I compare them to the OEM stock shackles it looks like just going in the first hole would be dropping it too much. Is this just an optical illusion or will the first hole actually level the truck? Thanks

https://cimg2.ibsrv.net/gimg/chevrol...cb86fe4bbb.png