I would like to move my battery to the trunk and rewire my whole carand I have a couple of questions to start. Is there a plug in type fuse block I could get out of a donor car? Where do most mount their starter relay?

You can buy a fuse panel(Summit or Jegs) I like them
better than a big ugly factory one... (some guys like
breaker panels but I dont care for them... I like to
be able to see if its blown)... try to get the relays
near the item you are going to run so you dont have
to run alot of length of the heavier wire... most of
my relays are on the passenger firewall where all my
electrical is
EDIT
You do know you have to have a master cut off if
you move the battery to the trunk(just so you know)

I installed a complete 20 circuit "EZ WIRING" harness kit in my son's pickup, it was a breeze, complete and $130. Also the tech help was very good (had a few questions on the steering column wiring)

Rickster

That's where I want to mount everything, on the right side. I still have the stock dash for now. and it's being stripped so what I was gonna do was take a pc of aluminum plate about .09 thick and mount it from the dash bottom to the floor and mount everything on it fuse block, relay,ignition box,switches etc.

I used those fuses that glow if they blow, so I could see immediately if something went wrong. And you might think about making a wiring diagram for future reference.

The wiring dia is at the TOP of my list.