---

For clarification:

What size motor does the 2014 Dauntless 170 have? Only a 90hp?
That is Minimum hp for that boat according to Boston Whaler catalogs.
http://www.bostonwhaler.com/Page.aspx...tless.aspx

What size motor would you be repowering the 2004 Dauntless 160 with?
What brand that requires you also changing controls, etc.?

Both the Dauntless 160 and 170 are rated for 115 hp max. from what I see in the specifications.