OK, another newbie question I'm afraid

. Took my wheels off for the first time over the weekend to have a look at brakes and suspension. Whilst the brakes were pretty much as expected (albeit the flexi-hoses have already been replaced with braided ones

), I was surprised by the coil-over style of spring fitted to the front uprights. Is this standard on the 944, or are they aftermarket?

To be honest, they look pretty tired, so I am planning on replacement (the rears also look pretty old), so any suggestions for a good fast road/occasional track day car? There seems to be a bewildering range of options, but I don't want to spend a fortune or move too far away from standard (no KW3s

), so are Konis, Spax, Bilsteins or Gaz the best

. I don't particularly want to go down the route of lowering the car and having to reindex the torsion bars...
Phil