I have a 2003 Honda 350 rancher, I bought a 2010 model 420 rancher motor. What all will Ineed to make this swap. The drive shaft fits. But electrical wise what do I need to buy. Is it carburated or fuel injected? I’m new to this so any advisewill be greatly appreciated

I have a 2003 Honda 350 rancher, I bought a 2010 model 420 rancher motor. What all will Ineed to make this swap. The drive shaft fits. But electrical wise what do I need to buy. Is it carburated or fuel injected? I’m new to this so any advisewill be greatly appreciated