Koni's are adjustable but they are rock hard regarldess of what you adjust them too. I think the valving internally is on the primitive side if you start looking at bilstiens (typically non adjustable).
KYB white gas ajust are non adjustable and bloody rock hard. You better make sure your tranny will take the beating. When you drop the clutch the clutch must \"give\" also ESPECIALLY if your gonna use some slicks. If your using street tires you'll get away with it due to no traction.
Last year I went with KYB rear gas adjusts, black magic disk clutch and I did 1.5 - 2 feet wheelies. I've never gotten that much air before.
http://members.shaw.ca/aircooled/06mrpjuly...ly7fri_234a.jpgHmmm snapped/exploded my first gear (even with beefier 1st gear ilder), chipped teeth of my pinion and blew up my trans
You cant go that wrong using stock replacement cofaps or brazilian nakata.
I put nakata's in the rear and my wheelies went down and made things easier on my setup. Not to mention more consistant/faster 60ft times. This is just my experiences with my car.