Here in Germany the OM606 came in these chassis:
E300 ( W124 non turbo / W210 both non turbo and turbodiesel)
i didnt know that they only came with bigger engines in the USA
i wouldnt fully rebuild these engines, i wouldnt trust all these aftermarket parts when oem is totally fine even for some good horsepower ( i dont think u will need over 500 hp or something)
totally overkill to get such a normal engine build in europe and shipped over to the us.