This vid describes the main steps required to swap out that Magneti Marelli EFI and convert to a carbureted setup. On a difficulty level from 1 to 10, I would give this one a 5, only because of the amount of work needed on the fuel tank. You basically have to gut the inside of the tank and drill out where the old EFI lines connect, so the Pingel adapters can be fitted. The prepping of the tank is the hardest part of the job. The electrical and intake/carb swap is a breeze, but you will need to buy or make a wiring harness (they are no longer available from Harley).