Anyone know why the 2008 paint sets for a Deluxe will not fit prior years?

Thanks

 

I had bought a 07 paint set blue burst and ordered 08 deluxe the dealer called me and told me it would not fit because the frame was changed so the rear fender won't line up and I think they changed the fuel pump and injection system so they said the tank won't work because the holes in the tank are differentI know the swingarm is different also if that matters at all

 

Thanks for the info fatdaddy...much appreciated.