Coils, shocks, leafs all shot

Well my 05' access cab suspension is basically non-existant. The Canadian winters don't help I'm sure with the 4-5 month long salt/ice covering that's over all my suspension components. I bottom out so hard that one of my truck cap windows broke the other day in the frigid temperatures (-30 celcius). Leaf pack is completely sitting on the overload leafs on both sides. bump stops on the front are hitting regularly. Just curious what people would suggest is the stiffest leaf pack on the market that will also provide a 2" lift? Currently I'm running a 1.5" block under my stock 3-leaf pack in the back. Truck is used like a truck.

Thanks