uprights modification

[vick]

hey, im about to purchase a set of wishbones off 3GE, will be using sierra uprights, can anyone plz tell me how to install the uprights to the wishbones?

what if any modification are done to the uprights for it to fit? i herd some things about mushrooms? im quite confused and cant wait to get building and send every one pics, but need to get some basic knowledge before i get building.

thank you