The moderator of this board, Rich-L79, is probably your man to answer these question and I am sure he will eventually see your posting and help you out. He owns a very nice version of what you are describing and appears to have made it a passion of his to know this model inside out. You have come to the right place to get the answer. Be patient he is very helpful.
BTW: Welcome to the best site on the net for Chevelle information. We have many "resident" experts that visit this board.
Mytmouse A.K.A. Robert Stacho
ACES Member # 04359