Mr. fixit, I think a chain is just as reliable as gears. You just dont get the sound (which I personally like) and since I have a supercharger already I just thought it would sound that much better. The chain I removed had no setting, only zero. I just assume put the gear drive at 0 also and verything should be exactly the same as before. I was just curious as what the advantage/s were with other degree setteings and it seem best to leave it at zero. DC COBRA I dont have near the clearance problems ( IKNOW SOME PEOPLE THAT WOULD LOVE THOSE "PROBLEMS") that you do. I only "ONLY" have 620 lift.