Looking to lower my 12 Boss soon and need to decide which springs to go with...ive had an 11 auto GT, a 12 Vert Auto GT and currently have a 13 Auto GT...all of them have been lowered on the Eibach Prokit but im hearing these same springs installed on a 12 Boss will not lower the car as much as a regular GT...is this true? or is the drop the same as the standard GT but just calculated less because the Boss is Lower from factory? Please post pics and specs if you have them to help me decide...