[mustardjohn]

Here is some more data on springs from Ford Motorsport if you don't already have it

B springs 425/530 Front spring rate; 200/300 Rear spring rate Lowers Front 0.875"-1.00" and 0.50"-0.75" rear

C springs 650 Front spring rate; 200/300 Rear spring rate Lowers Front 0.875"-1.00" and 0.50"-0.75" rear

F springs 460/570 Front spring rate; 170/310 Rear spring rate Lowers Front 1.25"-1.50" and 1.00"-1.25" rear (Coupes Only)

G springs 500/570 Front spring rate; 170/310 Rear spring rate Lowers Front 1.25"- 1.50" and 1.25"-1.50" rear (Convertibles Only)