Hi, Andrea!
1) This is a 155Q4 suspension kit customized at Berlina Sportivo request;
2) Yes, the kit includes front and rear parts so that is reflected in the price (don't forget about the extra costs- see above);
3) The proper kit for tunning is up to you I think, you must know exactly what your request/expectation is;
4) Soon we'll have cleared that too, stay stick;
Maybe you'll have more complete infos reading the whole thread.
Cheers,
Chris.
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