The way I understand it you maintain the same distance and geometry of the stock shocks, so it wouldn't allow you to run longer shocks with the same angle. In order to run longer shocks you'd have to leave the upper mount relocation kit off, but even then the shocks will be at a more acute angle towards the frame than stock, more like a long travel setup.
There is some good information about the kit as used for the 660R on raptorforum.com, a member named quadmaniac among others runs this kit. There are also some threads on it in the 700 sections.