Can anyone give me a reasonable estimate on the retail price
difference between a Volvo SX outdrive and a Volvo DuoProp outdrive ?

Our bank is being a stickler for $$ and have low-balled the loan on a
new boat we're interested in. The boat has a DuoProp and the dealer
that by swapping it out with an SX, he can make up the shortage in the
loan value. I just want to feel comfortable that he isn't reducing
the boat by 'two dollars' for a 'one dollar' fix.

Also - is the Volvo SX comparable to a Bravo I ... or would it be more
comparable to an Alpha I ??

thanks for any help.