anyone have a source for the engine mounting bushings that are pressed into the rear manual transmission mount.

Is this what you mean? http://www.thezstore.com/page/TZS/PROD/10-2240

I think that he means #14 here - http://www.carpartsmanual.com/datsun/Z-1969-1978/engine-280z/engine-mounting  The part number shows some possibilities on the interwebs.  They're available, or were, in urethane also.

 

Man, the site is old-dog slow loading up a page.  I almost forget I clicked on Edit by the time it's done doing whatever it's doing.

Edited October 24, 20168 yr by Zed Head

Use stock bushings. The urethane ones will transmit trans noise like crazy. That's one of those places where poly bushings have no business being used there.

Yes.  Item 14 is what I want in OEM style.  Do you know who has them available?

Start with Nissan, Courtesy in Dallas first.

Then google the part number and see what happens