Im having problems finding a good cheap pair of 1.5 inch spacers for the front. I find some that are only 1 inch that might work. But if the 1.5's worked better then I would rather get some of those.
What about the front sway bar spacers?
1.5" spacers:
http://metaltech4x4.com/products_80spacers.htm
I'll trade you my 860's for your 863's if you don't want that much height in the back.