One they will come with a EFI intake, harness, and PCM. Rework for harness is $250 bucks and reflash PCM is $150. Add a fuel pump and lines $200 if that. So for $600 you have EFI. Vs buying a carb intake for $575. Then you need a carb for $3-400, as well as a fuel pump $50, and add a ignition controller $400. So a budget carb swap looks pretty expensive to me. One can keep the EFI for the price of the carb intake alone!!!Easier
All depends on your experience and budget.
Being a carb. guy, on a budget, there ain't much "easy" about fuel injection.