That is a picture of a manual top with spring assist. Here is an illustration from the gm parts book that shows both power and manual types. http://www.teufert.net/partbook/67-76/14-i.pdf As far as dropping the nuts with the top fully down there is plenty of room to slide a telescoping magnet down to catch them. or you could remove with the top up and they would be near the top of the opening but there is really no need.