1C not C1 but i'm just being picky.
I'm a fan of the diesels. But don't go expecting all the u-bute fuel economy that your seeing from the late model oil burners. Its all from being computer controlled, direct injection, common rail, turbo, etc etc.
Grab yourself one of those Weber carby adapter plates and go on the hunt for a CPI throttle body (Centre Point Injection), they come under a few other names as well, from the EA falcon (amongst others) and then grab a Megasquirt or if your willing to give it a go a Delco from the camira, pulsar, commodore, you'll just need the Kalmaker software.
http://www.gassavers.org/