Thought I would post this here as well, hopefully get more exposure
I was able to find these adaptors
Gorilla 79916 $2.99 Lug Nut Washers Tapered/Flat Adapter Style
Excalibur 788 $2.69 Lug Nut Washers Tapered/Flat Adapter Style
Excalibur 787 $2.69 Lug Nut Washers Tapered/Flat Adapter Style
I think most aftermarket lugs have a 60 deg seat so the first adaptor should work. The only problem as discussed in the definitive lug nut thread is will there still be enough bite with the adaptor.
Im hoping some one has some aftermarket lugs around and can try out a few to let us know! Im thinking about it but I don't have any aftermarket lugs.