What's needed for a conversion to dual headlights?

[Azrael]

Im new to the forums and just recently purchased an 87 r10 2wd short bed. I've done several searches on converting a single to dual headlights and all i can find is people saying just change the radiator support. Im curious if i need the wiring harness or anything else like the lower grille panel or grille brackets on the sides. Im going to be using the 82 style front end too so not sure about the wiring for the turn signals in the bumpers either. Thanks for any help and sorry if this has already been asked but i cant seem to find any good info.