crazy suspension kit

So, I was looking at maximum motorsport’s website and I came across their suspension packages. Apparently, they put one of their road & track packages on a ’90 LX Mustang and got it to run 72.5 mph in the slalom! That’s seems really fast for a mustang w/ 2k in suspension mods.

Here they have a comparison w/ other cars…the only ones that beat it were some vipers: http://www.maximummotorsports.com/Slalom.pdf

I know that this is probably old news for a lot of people here, but it just boggles my mind that if this is true, you can get a mustang to perform like that so cheaply. Are these pretty common numbers to expect out of any mustang suspension kit? Does anyone have any experience w/ this kit?
 
I have the road and track box on my car and I love it. I also installed their torque arm too. I would do everything except for the torque arm again. It made road noise increased like 10 fold. They make excellent product that fit perfectly the first time with out having to modifiy them. If you do the torque arm expect to spend some time reworking your exhaust.