What clutch to use in my 335i

Hi all,



I drive a BMW e92 335i 2009 with the following setup:



JB4

Bigger IC

Catless DP



And, sometimes, 20% e85-mix along with the ordinary 98 octane pump fuel.



The problem is that when I use the e85 the clutch tend to slip on third and fourth gear at 3500+ rpm. Ive decided to get myself a new clutch but dont know which one since I dont know how much torque the car produces.



I want it to be driveable (can you say so..??) since I use it every day but I also want it to be strong and reliable when pushing the engine to its max.



Ive looked at these two kits:



Street clutch (456 ft lbs):

http://ift.tt/1h6zqeF



Sachs Performance (398 ft lbs):

http://ift.tt/1h6zqeH





SInce I live in Sweden the Sachs is much easier for me to buy as it is within the EU...



Anyone knows what to do?



Thanks,

Andreas