There were no 5-cylinder diesels officially imported in this country with a manual transmission. The 300D was marketed as more of an upscale car.

There were a few brought in gray market. I bought a euro 300TD off of eBay a couple years ago with a 4 speed manual, and used the whole manual configuration in my 83 300 Turbo. The wagon is the same as the sedan as far as the conversion goes, same wheelbase etc.

I also had a euro 300D sedan with a manual that I parted out for the flywheel to make my 5-speed turbo wagon.

Good luck with your conversion, but from my experience I would suggest finding a proper 300D flywheel and statically balancing it to match the flex plate on your automatic engine to ensure smooth operation.

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1993 300D 2.5 Turbo (blue/ blue tex)
1991 350SDL (White/ Gray leather)
1983 300TD Turbo 5-speed manual (Green/ Beige)
1985 300SD (Black/ Black Leather)
1985 300TD (White/ Green Tex)
1980 300SD (Astral Silver/ Black Leather)
1990 560SEL (White/ Gray Leather)
1993 300SD (Black/ Black Leather)
1967 200D (Green/ Beige Tex)
1969 300SEL 6.3 (Moss Green Metallic/ Green Leather)
1975 300D (Astral Silver/ Green Tex)
2001 Ford Excursion Diesel