According to the chart I have, you should have spring 123321-(2104,2704,3604) so the spring you bought should work fine. Your rear springs should be 1233241504. Raising the rear wont really lower he front (aside from pitching the front down slightly). What I wws trying to point out is that these cars have a surprising amount of fender well open on the front, especially compares to a modern car on 18" wheels. You might be seeing that in comparison to the rears and thinking that its riding high in the front, when it might really be riding low in the rear.

I would check the front springs to see if they are one of the acceptable spring numbers before you swap them out. Unless they are springs for a heavier car, you arent going to lower the front by swapping new ones in