Re: volvo/mercruiser
You'll want to use Merc Brackets. You may find some bolt holes in the heads are different because of the years involved. I have never tried to make a complete Volvo with brackets and all fit into a Merc boat. The bellhousing bolt pattern will be the same, and the motor mount bolts will probably be the same. The heads will most likely have different bolt patterns on them for the alternator brackets, power steering, etc. That may require a little brain power on your part to get it all to work. You may have to buy the Merc brackets for the later year. It should all go together though. Remember, GM built those engines, not Merc and Volvo.
<br /><br />Aldo