opti question
^^^The spline drive technically can only be installed one way. As long as you line it up correctly and don't force it, it should slip right on and you'll know you have it on correctly.
Also, you can get a MSD cap and rotor. That will effectively convert your opti to a vented style. You'll need to run vacuum hoses to the intake elbow and to the side of the intake manifold to properly vent it. Don't forget to thread lock the rotor screws before you reinstall the opti.


