Patrick Dykes out at Casa Grande had the tooling done for his 3.55 half ton gear sets about 20 years ago. I was doing quite a bit of business with him at the time and I had quite a few discussions with him on the subject at the time. I doubt that he would have interest in 3/4 ton gear sets in today's economy. I would think one of his first suggestions would be to get a large deposit from the guys who express interest. With no deposit, guys with interest seem to evaporate when they are asked to fork out cash.