car: 1982 300sd on svo

i think my stock turbo is going out. so, is there a drop-in turbo upgrade? i don't want to mess with project type stuff with vgt. i just need this to work and get this car on the road but with a bit more performance. plans for this car for the future: IP tinkering, intercooler.

i've got a different car as a project.

tia

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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap)
new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped