It's a few days past yesterday but work got in the way of playtime.
Couldn't be bothered sealing the gaps so in it went anyway, I ran it in the drive with everything all assembled and thermostat in there and it is rock solid at 80 degrees so that's nice.
I started unwinding tape, gauges, switches and misc wires and removed this stuff that doesn't do anything except make me angry.
Next? uhhhhhh probably more wiring. Maybe even have a go at sealing some gaps in the floor/firewall so it isn't 420 every time I drive it.