modification

Hello, Tom from germany speaking/Asking basically 2 Questions: 1) Has there anyone replaced the original carburetors on a 3.0 CS (1972) by some different carbs but with untouched Engineblock/head/crankshaft/pistons...? Is there a substitution carboretor kit existing which works after...

I have picked up a stripped down Csi chassis that had already had an M30 installed. I don't have any of the original drive train and it is torn down to the chassis already. I am thinking of making it a CSL replica with an M3 drivetrain but I want to do it right and want it drivable not a track...