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.
Was going to ask if it's easier done with the top up. Lemme see if I can get the top up as I lost quite a bit of fluid the last time. I'm putting in new carpet so better rebuild both while it's stripped
