I'm looking to do this to my car on an upcoming R&R of the manifolds and turbo to clean them out and seal up a leak What I'm trying to do is figure out WHICH one to get!! Any suggestions I'm open to them!

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-SpecialDelivery
1985 300CD Silver/Blue H&R Suspension (Sold, still cryin over that)
1982 300SD Silver/Blue '85 OM617 (Sold)
1982 300D - Blue/Blue (Sold)