going by the ''standard,'' by just doing lowering springs/sport springs...your stock shocks won't last as long. If you want lowering/solid ride/handling...go coilover route. These mustangs are built better than ones in the past and also have better shocks than most cars in it's price range these days so by just doing springs, it won't be that bad. But, if you want the peace of mind/added adjustability/and don't mind forking over a few more extra dollars...then go coilovers. Just my .02. Good luck.
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