My buddy has an 00' mustang GT and is wanting to lower it, and im jacking my car back up because of suspension problems due to lowering, and he wants to know if my drop springs will fit on his car, anybody know if they will? thanks

 

Nope, totally different style of springs(front springs on S197s are mounted over the strut, on Fox & Fox-4-also known as SN95/New Edge, the strut and spring are mounted apart from one another).
The rear springs might physically fit, but not sure if they are the correct height or diameter. The springs on your Fox body in your sig will fit however...........................