Use a grinder to grind away the rivets on the inside of the basket. You don't have to be real percise because you're going to be ditching the old basket anyway. Then use the allen heads to secure the gear to the new basket.
whether you drill or grind them out. be sure to do it from the basket side. ya dont wanna mess up the main plate on the gear side. also, be sure to use lock tite when going back with the allen bolts. B)
No it was easy i didnt think that the rivits would be that soft. And then come to find out the holes that are in the gear are alot bigget than the holes in the basket. a lil nerve racking for the first one or two though.