I have the Volvo aq260 engine. It's a 5.7. Just a different color! I upgraded last year, not by choice but by failure. Mine quit while I was on a trip. I highly recomend the mallory electronic ignition system. Drop and go. I believe the kit is a mallory YLM ...... I forgot the numbers but its a bit pricey but my boat runs a ton better. However it says on kit that you can use OEM coil. Dont! This system will burn it up. You will need the coil pack, not the canister/cylinder. My boat rubs better than ever before..
Just my two cents, worth every penny.
Nick