How much power are you aiming for? Unless you want huge power, don't assume you have to dump the b30. This one has triple weber 45 carbs and I think I remember reading it has circa 200bhp.
http://www.youtube.com/watch?v=OEQlunOqKx4
Mine is having a supercharger and mapped fuel injection.... but it's in peices at the moment!
Cheers
John