Go to the website mentioned above. If you are interested in possibly running without cat, it is a must. Doing so without it can and will eventually trigger exhaust codes. Not to mention not ever clogging the egr with the blocker. Did it on mine, totally happy, and it hides in the harness as stated. Just take your time, and no one will ever know it's there.Newbie Here....What is a finger stick? Sorry for the lame question.