I put an LS in mine and i used the stock crx one..well mine was automatic..but i converted and baught the civic clutch cable form discount and it worked perfect. It shouldn't matter what clutch you are using.The clutch line shouldn't need to stretch. I would try raising the clutch fork up and sliding it on. Then put it down and see how much play you have.. Also i see alot of people try to put it under the intake manifold..Make sure you run it over the motor with the LS or it wont reach.