GTM? What, are you crazy? The kid will love the 33HR when y'all finish it. It's the most blank canvas for you to create a one of a kind cool boulevard cruiser. Build a GTM and people will stare trying to figure out what it is. Build a hot rod and people will smile and wave -- everyone knows what a hot rod is and everyone loves them. And your son is going to be very popular in High School when he cruises to school in it.

Less work, less expensive, and more cool. It's a no brainer.