Did this job about a year or two ago and I used Permatex Hylomar. It is not really an adhesive but a gasket dressing and sealant. Apply on both surfaces and let dry and tacky, then bolt together and torque evenly. No leak whatsoever since.
As long as the mating surfaces are clean, smooth and true, then I think you should be fine without or with any other kind of gasket and sealant.
Good luck!

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'85 300D Turbo - CA Version