Not many cars had the kick panel speakers(original). And very very few had the rear speakers in the convertible. Vikki has the best location for the rears if you can/will cut. I've seen them just below that in the arm rest too. There's a very good speaker that you can mount under the seats made by Secret Audio. For the rear speakers in my verts, I like to mount 6 x 9's in small boxes and put them on the floor. It isn't the best when your riders have to put their feet on them. I make them so you can move them around to accommodate. Here are the custom installed kick panel speakers on my 67;