For what it's worth, if you're looking at a new boat this time of year,
you should be able to get the 4.3L for what you would have paid for the
3.0L 2 months ago.

I went with the 4.3L in a Seaswirl 170 this summer and I like it ...
very nice performance in a little boat ... sure glad I did not take the
3.0L.

If this link works, go down to the props for the SX drive and compare
the 3L, 4.3L. Top speed is not that big a deal for me but ...
http://www.volvo.com/NR/rdonlyres/2D..._2005_2006.pdf