Best electric cutouts?

Summit sells a vacuum-operated exhaust cutout setup I've got my eye on for my '72 D200 pickup. I'm building a 440 to swap into it and don't want to go through the trouble of having to redo the factory 2-1/4" true duals so I'm gonna run 3" collector extensions off the headers as far back as possible with cutouts right before it necks down to 2-1/4". I also prefer to use non-electronic parts whenever possible.

Summit Racing SUM-670231 Summit Racing™ Vacuum Actuated Exhaust Cutout Kits | Summit Racing

They come with an electric vacuum switch but I'd just rig up my own direct vacuum plumbing with a direct "mechanical" vacuum switch. I'd imagine they open and close pretty quickly and should also hold up to the heat since they use turbocharger wastegate actuators. Pretty ingenious IMO.