Dude, you don't get a shredding liscence until you can do this:
!!
The most stupid-thin shredder necks I have played are a Hamer Steve Stevens model that a local shop had in the 80's, a Kramer Nightswan (I like the middle position humbucker), some of the Axtra guitars that a local shop used to carry, Robin shredder guitars like their Medley model, and some of the 80's Ibanez models. Hamer is kind of out of the shred guitar biz now. Ibanez still makes some models very similar to ones they made in the 80's so you might have the best luck finding an Ibanez with a really skinny neck. If you have the budget, Robin will still build you a custom dream shredder with pickups, exotic tone woods and features to your specs. I tried finding Axtra's site but it didn't come up. There's
Axtra guitars contact info on Seymour Duncan's site though.