Run out O290 or O320 case needed to fab engine mount

I'm about ready to fabricate the engine mount for my O290D2 powered Wag 2+2. I would like to jig a case in place in front of the fuselage running a string line through the case to get everything set just right for welding. My engine is complete, ready to run so I can't use what I have. I am looking for a red tagged, conical mount O235, O290 or O320 case that I can use for that purpose. I live in California so finding one out this way would be ideal to save some on shipping but will work around other locations. Does any one out there have a thrashed but intact case lying about they might be willing to part with? I've checked a couple of engine shops and asked my local chapter members (small chapter, no one currently building but me) but nothing yet. Let me know what you might have.

Thanks,
Marty

I'm still looking for a run out case. O-235, O-290 orO-320 narrow deck conical mount case any condition.
Thanks,
Marty