Need turbocharger center section for TA49, where to get and cost?

[GS70350]

Hey guys, i have a low mileage TA49 turbo, that the intake seals seem to be going bad on , causing it to smoke under boost, and sometimes at idle if i rev it in neutral to like, 1800 repetitively. really gets on my nerves. i would like to just purchase a center section from somewhere, used, or new, whatever, for a TA49 center section. i can send my center section back in, its still good, just needs seals and the compressor has some FOD, not too bad though. what should that cost?

thanks guys