Where can I findoriginal-appearing rear shelf replacement speakers for my 1984 Targa? Naturally, I would prefer speakers that bolt in without cutting or other fabrication. Also, my Monterey is in need of repair. Again, I want to keep the car looking as original as possible. What suggestions do you have regarding repair/replacement of this unit? If I replace it, what model should I consider? Can you suggest a vendor for repair or replacement? Thanks. Doc