My brother and I spent a few hours working on the engine today.
It does have an oil pump. and there is a plug I can remove from the front cover to feed the turbo.
I figured maybe about 5 PSI for boost max. My brother showed concern with the AF mixture.
He is a liceansed John Deer Techy. So.....

I might be able to procure a turbo from something small from him. We'll have to see.
-Matt-