I have an Alpha setup with a 350,, I have the opputunity to pick up an almost new EFI 300hp 350 at a great price but t came from a Bravo setup.

I would think the only difference is the coupler,rear mount and maybe hoses which could all be swapped over frommy current engine but I wanted to make sure. Thanks in advance!

There is no provision in the ECU on the EFI motor for the shift interrupt, you will not be able to get it out of gear, at least not easily/safely. It's do-able if you change the ECu and add the interupt switch.

Thanks..
So the rest ,mounts,couplers,waterlines,etc would bolt up no problem?

What year is the boat and new engine?

Boat is an 89, Alpha 1 , current motor is a mid 90s 350/270hp Magnum (one piece rear main)
new motor is a 2002 350EFI.

Yep, should go right in.

Do your home work on getting the ECU to work with the Alpha! Zinger on the Donzi board did his home work paid a fair buck and "Grenaded" the Alpha real quick.