Good product but don't believe the crap about any more bhp, usual yank lies, it will let the engine accelerate a lot better.
£220 is a lot of money though, my std 2wd sapphy f wheel weighed 8.9KG, had it skimmed lightened and rebalanced cost around £40 and came out at 6.6KG, now with slotting should be around(estimate) 4.8- 5.2KG, so for around £60(if I'd had it all done at once) I end up around 5kg, that's with ring gear attached, the fidanza is 4.5KG for £220 so up to you.
tabetha