I had roasted a lamb on a rotisserie over a spot, but that revealed my equipment was only capable of about 50#. My pigs were growing fast, and by the time of the company pignic, they were close to 300#. I was going to build a cinder block out, but it had to be done at my partners home 150 miles away from my farm, and the logistics were intense. That's when I stumbled upon La Caja China. Only problem was, it maxes out at 70# dressed. My pigs dressed out at 195# and 240# So I determined to build La Caja Grande! It's 38" wide id x 66" long and 30" tall. Its just big enough. The original design has you flipping the pig from the top which isn't practical with that heavy of an animal, so I made the end slide up, so the pig could slide out oven style. You have to flip it skin side up once it reaches temperature to crisp the skin.