225 ProMax what can I do?

Joined
Feb 24, 2009
Location
St Louis Mo
#1
looking for ideas to increase proformance with out looseing dependability and fishability.
Would lioke to run a 260 or a 280 but I hear horror stories about fouling out plugs when idleing long distances.
Can anyone make a suggestion for Mods I can do this winter while she's just sitting in the garage?