Thanks Billybob. I have the manifold gasket already (bought @ Fastlane for $8.46.) I'll need to get the other two. For some reason I don't currently have the flat gasket on the crossover pipe which explains why it's leaking there too. When I've removed the carbon before on the crossover I've had luck with carefully scraping with a screwdriver and putty knife then cleaning the remainder with paint prep solvent. The solvent is meant to be used on metal and cut grease so I figured it was the simplest solution. Just watch the fumes, it doesn't do your lungs any good.
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold