As far as I understand there is no engine upgrade available for the 2008 3.2 unfortunately, assuming that is the engine you have.

I'm taking my XC70 to Alaska this summer, put in new suspension all around to get her as high as possible and installed some big 245/65/17 tires that lift her another inch. Would be cool to get a snorkel in case of any deep-ish water crossings I might come across for some peace of mind, I know the r...