He wants coilovers, not a spring/shock combo where it would make a significant difference. Only difference would be the way the springs compress, with end results of a stiffer spring rate. I have B5 S4 coilovers on my 1.8t, and chose these units for that very reason (stiffer spring rates). I am not the only person who has done this, and don't regret my decidion one bit (was at first shakey of a too harsh ride quality, but that proved to be far from the case with my particular coilover choice). Placing 1.8t Quattro coilovers on a B5 S4 would cause an issue on the 2.7t, but not the other way around. Not so much if you were to place on coilovers for the 2.8 N/A Quattro onto the 2.7t. I have even noticed that some PNs for coilovers coincide for the 2.8 Quattro and 2.7t.
To the OP, if you are going the ST route, they have now changed all the B5 platform with Qauttro to one unit. Meaning, the 1.8t, 2.8, and 2.7t all use the same coilover. This was not the case when I first purchased, and it seems they have changed up their line-up a bit (even in design).

Originally Posted by
Jason@ECSTuning
It could be very possible that by even turning the coils all the way down you wont get the desired ride height as you want due to the springs not compressing enough since the 1.8T motor weighs less.
Jason
Just realised what you last posted. If this is the case, then a different coilover option should be in the works. And ironically, the new design of the ST coilovers have this flaw with a couple people. I have a very nice stance (I don't slam my vehicle), and have a lot of threads left in the front and a fair amount left on the rear.
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