Throttle body spacers, after much discussion on the AC message board, are a waste of $$$ on Pathfinders. For a direct port injected engines, the "swirling" of the air, which they supposedley do, have no effect on the performance is what I've summed up from their discussions. Just a marketing ploy to buy their product IMHO.
There's a guy on the AC board JGricci, who has Stillen headers but I know for a fact that Stillen discontinued production on them. I don't think they were a successful venture on their part.
I know that if you want to do a rear disc coversion, there are kits out there available but they are lots of $$$, in the thousands. AND you also LOSE your ABS capability. I've read this from many sources.
I know that Stillen makes/use to make a sway bar for the R50 Pathfinders. If you have any luck finding one, let me know.
And one last tip, which I'm sure 88pathoffroad will agree with me on. Don't buy from AC(4x4parts.com). Don't get me wrong, they are a plethera of valuable knowledge and info, however they charge outrageous prices for their products. Not once have I seen a product and thought to myself" wow, thats a good deal", its more like the opposite, "you gotta be kidding me? You want HOW much for those lift coils?" :oops: