OK! Here's some pics:
http://www.itpro1.com/hood1.jpg
http://www.itpro1.com/hood2.jpg
http://www.itpro1.com/hood3.jpg
The 1x1 strips with screws dangling out are the rests - they sit atop the tank frame, the box nestles outside the rim.
My idea was to have the new extension line up with the 1x1 rests, and simply raise the whole lid, which is hinged in the middle.
AJ
[ 04 April 2002, 20:20: Message edited by: AJ_77 ]