Dire need of Greddy manifold

A somewhat odd set of circumstances leads me to seek a new exhaust
manifold for my Greddy-turbocharged '91. First, at 5:30 one morning
while following another vehicle, I noticed (too late) a large chunk of
meat in the middle of the road. It was a well-hit and pulverized
deer. Since my Miata is already lowered, and the deer was about a
foot high, I ran over it with a resounding "thump". Other than my dog
absolutely loving my car for the next couple of weeks, nothing seemed
amiss. Then yesterday, I did the same thing to an already-deceased
dog. Another "thump-thump" and all seemed well, until I started up
the next hill, when my exhaust became noticeably louder.

Long story short, the turbo had its mounting bolts sheered off. While
attempting to drill out the old screws and re-tap new ones in, just
about everything went wrong, including breaking off a screw extractor
(no drilling *that* out) and finally breaking the tap in another hole.
While performing this whole process, I noticed that the manifold had
what I've come to know as a well-reported problem. It had a small
crack near the inner bolts.

Anybody know where I can obtain just the exhaust manifold for this
turbo?

Info would be appreciated. I desperately dislike driving my other
car, a Geo Tracker. Argh.

HELP!

DonB