Someone here on CRG, I don't recall whom, mentioned to me they needed an original dash speaker bracket a while back.. there's one on ebay ...(not mine, just passing along the info).. :)
http://www.ebay.com/itm/281937655714?item=281937655714&viewitem=&vxp=mtr
A few years back I rewired and tighten my dash speaker and bracket. The improvement in sound and volume was remarkable. Good suggestion, Gary.