Oh im sure the Autodelta kit is good, i just think it makes no sense anymore with 147s being as old as they are, you can sell your 147, add the 4K and buy a newer faster car, which is still 100% stock.Yes, but be sure that you will spend much more money in dubious solutions, without even come close to this horsepower. 4k may seem a lot of money but it is a ''plug n' play'' solution with everything you need for the modification. You will spend 2,5k or 3 maybe and you will encounter problems you never expected. Trust me. My first modification was on an Opel Manta GT/E back in 1978. There is another solution if you need something strong (god forgive me). Get a Kia Ceed GT (204 bhp) for 26.000 euros, something a new alfa hatchback should already have (with an alfa look and badge ).