Off Road Use Si (trackwork) and it was only a little more than the Stage 1 Organic. I wanted a mild upgrade from the standard clutch and I didnt want an Exedy Oem Replacement as there would barely be any difference I hardly drive the EP anymore, I use a Mazda 121 for DD. But of course I will do a lot more once its ready to rock. It also has a higher torque tolerance rating than the organic, 143 lbs/ft vs 162 lbs/ft so better for the future really. Plus it is a mild paddle (in paddle terms) being 3 puck as opposed to 4+ puck. I've had mixed feedback that they are bearable and not as harsh as some people may think. I have experienced more solid clutches before and Im up for the challenge if there is one. I could have gone with a reduced thickness (half thickness of a normal disk) disk but I wanted this one to last, also has better heat capacity than half thickness. Im also looking for great response so thats another reason. This is an extreme na build and yes hopefully it will be a road legal track car, if not I'll sorn it. You didnt think I'd go to these lengths to drive it round the town did you mate? Hope that answers your Q's bro ;) Joz