280z tail light screws?

Hello all

I just got a nice set of 280z tail lights off ebay, they look real good but one of the screws on the back broke in half when i was trying to get the rusted nut off of it. I think the nut was stripped and rusted on. When i unscrewed it with a ratchet it broke off. About half of the screw is left. I don't know if that is enough length when installed;

How do I remove this screw and put a new one in there ?

THis is the gold colored threaded stud on the back side of the lens housing. Does it just screw into the plastic (standard or reverse thread?) or is there a screw head under the plastic that I can't see? i unscrewed the flat hex washer that touches the housing but the screw is still firm in there. Just don't want to break it.

Otherwise this set is exactly what I was lookin for and for a good price. I was so mad when it broke off!

Thanks for any advice.

Edited January 14, 200916 yr by 280ZSS