Picked up 01 4.2 A6 had some questions

[to20vt]

Car needs work but picked it up at a good price.

1. Can 17z or 18z brakes be swapped on? Front brake calipers are seized so now would be the time to upgrade!
2. How are the H&R sport springs lowering (black) 29797-2 & H&R Race springs blue 29797-1? Seen a set for sale on my Local Kijiji

[CAL4.2]

17z and 18z can be had from Ecstuning.com or JHM as a comprehensive kit (rotors, brackets, fluid, calipers, pads, lines).

Can't speak to the H&R's but the race ones are pretty aggressive in lowering height. Be prepared to upgrade dampers (ex. Bilstein HD or Bilstein Sports) if going H&R.