Your mech needs to send his kids to college and needs to make a few bucks on the parts.

http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1MB12FET61UD1DUJ78&year=1988&make=MB&model=560-SEL-001&category=All&part=Subframe+Bushing+Kit

Give or take, plus those metal parts. I'd say rough cut $300 in parts.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200