Fire wall insulater pads

[RodnRudy]

I purchased the aftermarket insulator pad three piece set. It is a Repops product. No instructions of course and since my 68 didn't have any when I bought it I'm at a loss on installing it.Question is does the pads go on before the inner heater box? Also on drivers side does it go on before brake brackets, steering column etc? I looked at the assembly manual but it is not much help.
So any one who has done this feel free to chime in and give me some pointers.