This isn't a thread asking what I should do, this is documenting what I'm currently doing (just so I don't get any posts saying 'it's a waste of time'). My friend had an Ibanez Gio (you know, the $5 guitars), and he also wanted a 7 string. After building my 7, he asked me if we could convert his guitar to a 7 string and I said sure, why not, I had extra wood left over to make a new neck out of. I used the site Calculating Fret Positions to figure out the scale conversion- by adding 1 fret behind the nut, I increased the 25.5" scale to 27.016." Woo! perfect for a 7 string. So far, I have routed out the neck pocket to accomodate the new neck. I will be replacing the Gio-style neck plate with Rg-style bolt bushings for a smoother feel. The new bridge is going to be a flatmount, whereas the previous was one of those Strat-like tremolos. I have routed a cavity around the old spring cavity in the shape of a perfect rectangle, as well as around the bridge route, so they can be filled in solid with a chunk of Maple. I'm curious to see how this is going to sound... PICTURES COMING SOON!!!