They are just m4 screws and m4 heated inserts, can find them on Amazon or multiple different websites. I do offer dual amp fairing packages with distribution and every needed to install two amps if your interested
Dude that amp rack and the way you mounted the DSP and distribution block is nice! Is there room for another amp, say a SD 3000.1 for midbass inside the bags? Also, is there room where you installed the dual 800.4 for 2 larger 4 channel models?