Ron,
You're one of the few people I've ever heard that understood what WD meant! The product, like many we use, was developed by the military to protect metal parts. It is an excellent protectant. It is also an excellent penetrant, a byproduct of its molecular properties. It is only so - so as a lubricant, which strangely enough, is how it is marketed.
Can't help you with the price of the ZF gears, but hold onto your wallet when you find out, Lloyd Butfoy can help with the pricing on the ZF bulletin board. I'm considering 3.77 gears myself, sometime down the road, I have other things to do first. I enjoy the car the most, out on the open road, traveling. Figure the gears will enhance that experience.
George
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