Frustrated

Hi guys, I need some help...

Recently I ordered some SS springs from Jegs for my 74 Dart Sport. I have 225/75/15 tires on the car, and with the SS springs the rear was still too low. I added shackles from the local auto parts store, still too low. I returned the springs and ordered some springs from JR Spring Company. I told the gentleman I spoke to what size tires I had and he gave me a part number of 78-705 i believe. I ordered 2 of these and put them on without the shackles, too low. Added the shackles, still too low.
I haven't weighed the car yet, but I do have a speaker box and spare in the trunk. From what I have read the SS springs should have been high enough. This is strictly a street car, and is my daily driver. What I would like is to have is the rear slightly higher than the front. I will call John R Spring tomorrow and see if they have any suggestions. I will also post pics in the morning. Any of you guys have any ideas?

Thanks,
Russell