I Just noticed your post and I have a metal valance listed on E-Bay right now. It's not from a '76, it is from a '72 and i'm not sure if this will fit your car but attached is the link to view it.
Thanks..........................................Ve rn
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=7980636234&sspagename=STRK%3AMESE%3AIT