probinator

im looking at getting the bmr lca and the panhard bar. non adjustable. I will be lowering my car on the eibach kit. do i really need to adjust the pinion angle?

vsop

If you are going to drop the rear, you need to get an adjustable panhard bar and either an adjustable LCA's or an adjustableUCA.

Look at it this way, it will also help if you add an aluminum driveshaft as you would have to reset the pinion angle for that as well.