Hoping I can find some advice search didn't really field anything.

I have a 21' Spectra Mini-day with a stock 454 that was pulled from a much smaller boat.

A local guy is selling a complete Gen VI (wiring, comp, everything).

What kind of needs will I run into for this swap? Is Efi doable? Will my water logs bolt up? Basically except for maybe a cam swap, I'd probably run the motor dead stock.

Boat has a Berk JC with I believe an A impeller and a Place Diverter.