There is just enough room to do it, but the question is why do it other than for bragging rites? Parallel or sequential turbos have all been surpassed and replaced by VGT technology. Compound turbos don't make sense unless you plan on running 25+ psi of boost.

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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

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