Somebody please tell me again: did 70 Chevelle SS big blocks use spark plug shields or not? Second question: did 70 Chevelles with non-stereo but front/rear speakers use two speakers at the rear or only one, and if only one, was it on the passenger side? Thanks.

not sure about the plug sheilds but about the radio, stereo means fazing from left to right if its not stereo then its mono it only has the one speaker in the center