I purchased the larger 24 quart cooler and the shirt with a hood. It's great having cooling on your head and doesn't affect the fit of the helmet.
I took my suit to a seamstress and had her put a button hole just big enough to get the hoses through for the cool shirt. We had already figured out where the hoses needed to come out at.
I mounted some angle in the spare tire well and welded in place.
I made a bracket out of angle, drilled holes for the zip ties and shaped it to fit the inside profile of the rocker panel and welded it in place.
I mounted the hoses with a couple of zip ties. With the release buttons on the hoses facing up, all you have to do is press down on the buttons and the hoses pop right out. It's nice to have a solid mount to just connect the hoses. Also I don't have to search for the ends every time I need to connect the hoses, I know right where they're at.
I routed the hoses to the back of the car using zip tie holders and self tapping sheet metal screws. Be careful not to use these above the fuel tank as you could put a hole in the tank.
I used a connector off of the stock wiring harness that I had pulled from the car during the build. This way I can unplug the cooler and remove it.