Fuse block locations?

[SeanPaintsFlames]

I've got an almost-frame-off '80 C10 short step.

I'm at the point of the build where I should probably go ahead and get a wiring kit for it. The problem I'm having (in my head) is that with a smoothed firewall, I don't want to have a giant bundle of wires coming through into the engine bay.

What have you custom guys done in this situation? I'd like to not see any wires at all. Starting with one of those EZ Wiring universal kits, I was thinking about mounting the fuse block behind the seat on a panel, or inside a cubby or something, and then running all the wires through the floor and out towards the engine tucked inside the frame from there. I'm thinking that if I mount it up under the typical left side of the dash, I'll still have a problem of it coming through the firewall somewhere, and the bundle of wires would still be seen when I'm standing outside the truck with an open door.

Suggestions?