Are you guys buying generic Bilstiens meant for a Cobra Mustang or the specific ones containing a Ford part number? Here's the thing, which goes to elaborate on what I mentioned this morning, the Bilstiens to seek out are Cobra Convertible shocks, NOT coupe. Cobra convertibles spring rates are much closer to the MN12 sport and aftermarket lowering spring rates. With coupe shocks you end up overshocking the car, and it's really not good for them or the chassis when it takes more resistance to compress them than the springs themselves. They should be matched.