I had mine on the rollers. Same engine and turbo. Mine made 290bhp but runs 4psi less boost.
My mate also has one with a piggy back ecu. His makes 357bhp with 21PSi boost which is pretty much what a stock
290 runs so there must be some advanced timings or something.
Mine has the 18"s which look great in black, no
cupra on the brake disks, no satnav on the head unit (I use Tomtom on my phone anyways) and no spoiler.
So if you can save yourself £4k plus I'd say go for it! I paid £16.5 for mine with 4k miles on the clock.