Looking at just over 1k for the turbo kit from van aaken if you fit yourself or if you want them to fit looking at about 2k i think, dont quote me on all that though,
How much power you want?
AND
How fast you want to go?
AND
How long do you want it to last?
and no it's not always the same , there is a point in FWD cars where more power becomes very annoying because of severe wheelspin, in the Panda it's around 170hp with 175 14 racing slicks, the Cinq shouldn't be far off.