Well, as we knew, the CarTech wastegate has a bad diaphragm, and replacements aren't available, so I need a new one. The plan was to buy a TiAl, but our parts guy can't get them any longer. He's recommended a Synapse, but I know nothing about them. Anyone hear anything about this wastegate?

The tial 38mm will bolt to the same flange as the Cartech Wastegate.
http://www.tialsport.com/prod_wg_38.htm
this is the one I am referring to. I would stick with Tial...Great Product!!!

Project canceled.

My insurance company will not cover this addition of "aftermarket" parts since I have the SE insured under a classic motor vehicle policy. Given that my last RX-7 was stolen and never recovered, I need to be careful and play by the rules.

So, this will appear in the For Sale forum. :-(

Man, if you really want to do this, change your policy. I have Haggerty. They're pretty flexible.

+1 for hagerty