Curt's '72 K20 Resto-mod

[lolo33]

what a restoration job !
very interesting.
What interested me first is the audio system with 6 speakers and bass system under the seats.
I've installed an audio vintage, and re-used 2 speakers Jensen under seats. But it's very noisy in the cab' because I've just glasspacks as muflers, and they are under the cab' ==> so the sound is not really good. Now I would like to put 2 speakers in cabin, but I don't know what is the best place for : buy kick panels ? other place ?
thanks for helping me on this point.
Laurent