I don't really know the Koni products in terms of engineering but if its a sheet metal strut body like oem with dinky pistons then you'll bend anything you put in there.
I'm going to assume you do this stuff on private property or at rallyx or the like. I DO NOT condone illegal driving on public roads and I won't continue to comment if I hear that this is what someone is doing. Rally in North America has enough issues as it is; having someone in the newspaper with even a car that just looks like it has a rally affiliation is BAD news for everyone plus you could hurt someone including yourself (we wear helmets and HANS and have cages with 6 point belts for a reason).
End rant. Don't take that the wrong way, we just have too much to lose.
2000 ZX3 Group 2 Rally Car