Thumper & Buttercup, that cab looks spectacular, it is heated, cooled, factory installed, no leaks and a radio, what more could a man want. I installed an aftermarket cab last year and a small heater but up until that time, I blew snow while enjoying the fresh air. I can not recall which was worst, back pain from all of that rearward driving or a frozen face and neck.
Your shop also looks great.
Dan