Lol.. aye its an XSI.. I never measured the std setup but I do know once lowered they do misbehave!!
Mines massivley altered now (307 hubs, fabricated bodies with altered ackerman, adjustable wishbones):
The rear has had even more work:
Now im not claiming to be a guru, but being friends with the Satchell boys who developed the pug stuff aswell as doing a LOT of reading I have picked up a few things..
Its hard to tell from the pics and I havent seen any details of these kits (measurements for the 'cones' that drop components are probably kept quiet to stop copies) but the fixed nature of it means its a comprimised design even something as small as changing the toe angle will throw the bumpsteer out again and without shims or adjustability in the linkages its impossible to dial out anything...
this is only my opinion of course.. anything must be better than standard I guess..
Stu..