Does anybody know if the 2010 boxes will fit on the 99 to 07 super dutys? do the body lines match up exactly?...has anybody changed one?

 

yes, been done many times already. I have done 2 2011 boxes on older superdutys also.

 

perfect!!....$1000 for a brand new take off w/ tailgate and bumper sound like a good deal?

 

Sounds like a great deal. Go for it! Post pics when you're done.

 

Yes, better grab it fast before others do. For the 2010 model it is a direct fit except for tail light wiring. For the 2011 same except you need 3 self tap screws for the fuel filler plus the wiring issue. For the 2011 , the wheel well arches are slightly different, but trust me, it looks fine. Get the bed bolts and clips if they have them, as you will find out quick some are probably siezed.