i expect bilsteins to last almost forever. i put hd's on the front of both my mercedes and my volvo. i haven't gotten around to buying the backs. lol.

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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap)
new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped