Does your s3 comment aplly to my a3, as its quattro to. will that set up bring the handling above any over hot hatch on sale.
Yeah, 1.8Tq and S3 are interchangable with the basics, but I'm not sure if you can get as much negative camber on the front, compared to the S3.
But, springs, dampers, ARBs, tie-bars etc are all common.
As for getting the handling to a level above any other hot hatch...that's a tough one.
Don't forget the S3 is 10 years old now...and although you can vastly improve the chassis, you can't work miracles...and some 'newer' cars just have a better chassis out of the box.
For example, my S3 when fully sorted felt similar to a bog standard Mk5 Golf GTI - the GTI is that good.
That being said, if you do change the suspension to some quality replacements, it'll certainly be up there with the good ones....but will you ever make a road going A3/S3 out-handle a Clio Trophy, Megane R26R etc? No. I doubt it.