Looks awesome! Reminds of a '67 Mustang fastback project I worked on- we put an '07 GT500 motor in the car w/ the battery located in the trunk. I ran a single 1/0 gauge cable to the front and split it there- alt, starter, etc. with a similar-style high-amperage fuse holder like you are using. I took the wire direct to the starter, and a smaller gauge wire from the starter to the alternator. Worked like a charm! Only thing I'd have done differently in your install would have been to wrap the entire length of the cables w/ wire loom. I use the flexible braided stuff (Tech Flex). Just me being paranoid... there's lotsa sharp edges inside these cars. Oh- and I solder and crimp the ring terminals to the cable... messy and requires lotsa heat, but creates an impeccable connection. Looks awesome- I really dig the fuse holder/switch panel and where you put it!
I like the cat master switch. I should probably order one since the boss don't care, that way I have it when I do mine.
Very nice! Let us know if you have any starting problems. It's hard to believe that a battery that small will start a car, and with that much cable.
Super write up! I'm inspired!