A quick search shows that most also want to lift the front 2 or more inches.
The springs are cheap enough, but you don't want to lift it you said.
You could always buy them, and cut a little bit of the coil off.
Possibly try calling Progressive Suspension, and Moog to, they have helped me with numerous cars, and bikes. I have on order for my ram 1500 shorter, but progressive springs. Despite slightly less suspension travel because I am actually lowering my truck, I find on them all in the past to ride better, handle sweeter, and bottom out less because they are progressve and I also upgrade to better shocks at the same time.