Here in Dominican Republic, the racers make like a piece of aluminiun scuare that attaches to the chasis and it has a lot of holes placed in a way that the stock one can be placed in any position, then they weld a piece to make the concetion more long.
Save money, a lot
It has (the ones that I have seen) at least 5 positions.
Why the money you save can pay a good teaching class form an expert. And improve.
Got my Woodcrafts in and installed. Installation was a snap and took about 20 minutes. Craftsmanship is great for such a low price set of rearsets ($280). They are extremely light weight and look great. You lose your rear brake light, but they sell a kit for $18 that hooks it back up. I'm not too concerned now, because I rarely if ever use just my rear brake in situations where others need to know that I am braking. They place your feet one inch up and one inch back, enough for good clearance, but not uncomfortable. Shifting is slick as glass now also. Overall, I am very pleased with them.
The big advantage to the more pricey rearsests is adjustability. I agree, I don't seem to be able to fork out the cash for the Attack's or Harris units but they look awesome. Check out http://www.kneedraggers.com/ for the best pricing.
Did the Woodcrafts come with the linkage rod for the shifter? Was that price including the Woodcraft brake and shifter levers? I'll warn ya on the shifter lever since it doesn't have rubber insert - if you grind it on the ground it'll become a sharp edge and eat the toe pad off your boot in no time. But if you rarely visit the track it won't be a problem.