My 67 coupe has the origional six cylinder springs under the front end and the 351W is bringing the front end down pretty low. I want to replace the front springs now. My question concerns the shelby mod to the upper control arms. Does doing the shelby mod lower the height of the car and how much. If i do the shely mod, do I still need drop springs? Which is better to do? I hear the shelby mod helps ball joing angles. I drive my car in hard, but on the street, occasional strip. IT has 15x7 wheels with 235/60/ r 15 tires. Help!!