I have 6" TC springs in the front, with a 4" shackle flip in rear, and 2" TC lift springs in the rear of my SWB truck, it sits about level like that. So I would say it would sit low in the back. If you want 6" springs you will need to get the shackle flip and some 2" lift springs or 2" blocks. The springs would be better. Another option is, if you are switching it anyway, maybe you should get 56" springs for the back. All you have to do is mount the shackle flip bracket 4" further back, and you already have to mount it anyway.