Hey guys does anyone know if the hatch struts are specific to ZR-1's or are they a standard C4 part. Do all the C4's have the electric defroster grid, or is that also something that needs to be specified when ordering replacement struts?

I was trying to run the part numbers from the parts CD and I come up with one side NLA? Then I ran the part by description and came up with or without defroster. I then looked at Corvette Central, and they don't say anything about the defroster. I'm
TIA

Tom