I used generic springs from rally design, they are listed under springs-ford. You can choose length (std, -1, -2) and spring rates. TBH for the price im really chuffed with them. Think they were 16 squidilys each. I used -1" which looks more like a 40mm drop.

I have some avo rear springs kicking about that I can measure for you if you like? If they are more suitable you can have them.

Rob,