FWIW, I have it successfully running in another car:

http://www.rx7club.com/showthread.php?t=664882&highlight=ES12

Some notes here:

http://www.aircondition.com/wwwboard/alternative/current/7348.html

A lot of older Porsche 911 enthusiasts are also running.

I more concerned about 16+ gallons of 93-octane fuel than less than 24-oz. of an iso-butane mix . . .

:-) neil