I used their Hurricane system in my 54 truck. Had all the mounting brackets for the low compressor mount with alternator above. The underdash evaporator used a couple existing holes from the old heater (which is replaced with the new enclosed heater) as pilots for attachment. Unlike some others, the Olde Aire unit can be opened up should you need to get inside the case and I mentioned that the 3 speed fan is powerful but has a really quiet low speed which makes for a quiet cab.
The only negative is the visual effect of having the main line attachment points visible on the firewall. All hoses were crimped and no cuts were needed to the core support to run the hard lines that attach to the condensor.
I would purchase another hurricane system from them if the need arose.
Dave