Hi, we have a 2010 Lund WC 14' and i can tell you that 25 Hp is Maximim allowed by law to install on it (for safety and insurance purposes [-o< ) ,so that's what we put on our Lund...a 25 Hp Honda BF25 =D> .
Dan
I have a 14 foot Gregor that's about 60 inches wide at the widest point. I replaced an 18hp two stroke Johnson with a 15hp four stroke Honda. The boat I believe is rated for 20hp. I think I could've really just used an eight or 9.9 motor.
Tiller or consol? If you're seated midship you could probably get away with more HP. My 14' V-hull is manufacturer rated up to 40HP w/consol. I personally would max out the HP per allowed rating.