If it isn't a SL then you won't have to remove the aluminum pan but you will have to remove the subpan and oil pump chain. The compressor, crank balancer and pully , air pump, water pump, and distributor will have to be removed. do it and back together in 3 hours and your my man.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician