There is. It's called unkown v2's save editor. It edits you svg with custom dvars. I made some awhile back when blops mods were new and cool Didn't think xpg needed them but I can post them if you would like.
http://www.youtube.com/watch?v=KMGZldSj2d8&hd=1 Thats my video with my gpd. Also there is svg mods for dlc if you want to check that out it If you would like to edit the gpd use xero http://www.mediafire.com/?625179587u5ue2i