with the amount of 140s out there,there should be another choice for the shocks instead of buying them from the manufacturer(oem)prices for shocks alone(leveling) are outrageous.why doesn't bilstien make these.any ideas out there?

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'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)