On my '92 thre is an opening in the shroud on the right side top. I sometimes spray some water in there to knock out the leaves etc.
I went out and looked at my 93 and I could not find the opening you are talking about. Could you post a picture of the area so that I can find it.
Yeah---I've seen that in one of the major Corvette catalogs. Was it difficult to install? Does it seems to work?
/s/ Chris Kennedy