Really struggled with this decision. I will be using mostly fuses with just a handful (4 right now) CBs. Where to mount the 2 fuse blocks? Decided on a passenger side mount which will end up behind a panel. There seems to be enough wall space for fuses and wiring.
Turns out that I will be running 8AWG from the battery, up the LH side, thru the firewall, connect with Alt lead, and then across and back to these blocks on RH side. I could swap my RH side ground line with the power line but then I'd have my 2AWG fat wire and a 8 AWG ground wire running together, under the floor, out of sight. The Tefzel is tough stuff but I can just imagine the wires rubbing together for 10 years in the same bundle and shorting these unprotected wires. I know it won't happen but I'm going to stay with both power lines on one side and ground on the other. Of course a single 20mm shell could take out all my power... but I'd be dead anyway.
Follow-up notes with final pic - Notice that the smaller fuse block grew up a size. I since discovered fuses with LEDs so I've planned a plexi or polycarbonate plate in my sidewall so that the LEDs could be viewed. While I think this is completely unnecessary from a functional standpoint, it should look pretty neat.
Fuse block for each buss
Fabricated 2 mounting plates with nutplates on back