I recently bought a set of used fiberglass F355 tail lights with 4" cutouts for LED lights to replace my stock tail lights and came with no instructions to install. The question I have is, do these fit onto the stock tail light housings or are the stock assemblies removed and the fiberglass tail lights put into place? If so, do I need to fabricate brackets to hold them in place? Any help is appreciated.

Where'd you get them from? One set sold here on the forum is designed to replace the lenses on your stock GT lights. If you have that set they have little tabs on them that will snap onto the back half of your GT lights once the lenses have been removed. If the panel you have is blank as far as mounting tabs then you will have to fabricate some way to attach them.

I bought them off ebay. They have pre drilled holes. I'm guessing I'll have to fabricate something to hold them onto the housings. I'd post pics but for some reason the site won't let me.

If I remember correctly, you have to remove your stock lenses (lenses only) but use the stock housing. The panel screws into the lip around the stock tailight panel and basically you are taking the 2 taillight housings and making them 1 piece. Then the whole assembly fits back on the car in 1 big piece and secures with the stock taillight housing screws.

quote Originally posted by IMSA GT: If I remember correctly, you have to remove your stock lenses (lenses only) but use the stock housing. The panel screws into the lip around the stock tailight panel and basically you are taking the 2 taillight housings and making them 1 piece. Then the whole assembly fits back on the car in 1 big piece and secures with the stock taillight housing screws.

Thank you. I'll try that ^ and see where it leads me.