You can swap it out if you're willing to replumb for the crank mounted pump.
There are also cam mounted pumps from aftermarket suppliers. You need a
special timing cover for them. Anyway you can pump raw water into the
system is fine, doesn't matter what kind of engine it is. A used boat parts
supplier would be the place to look. Buying all the pieces new will be
outrageous, particularly times two.

wrote in message
...
Greetings,

My boat has twin, inboard Mercruiser's (350CID) with the Bravo-style
raw water pump. The location of the pumps, along with their design,
makes replacing the raw water impellers an absolute nightmare!! I
have to remove the pumps completely from the engine, but just getting
to the pumps themselves requires bending and twisting not meant for
the human body!!

My previous boat had a Volvo powerplant, with its convenient, crank
mounted water pump. Being that most of the manufacturers use a Chevy
block, can I replace the current Bravo pump with a crank mounted pump?

Thanks!