you wont find a supercharged ZS for sale round here I think there are 3 kits left in the UK.
One Drew has, One is on the blue car and One I do not know.
To be fair while the HP is more over a quarter mile its only 4mph quicker anyway so just invest in a V6 with good mods if you can find one
I have for sale one that would be more reliable and cheaper to run than a supercharged car and probably wouldnt be far behind. Just a shame it dosnt whine