It's that notch and alignment to the strut bolts that got me. The one install video the guy has on YouTube is great and all but it gives an incorrect point of reference for alignment. I ended up doing one side three times to get it right. On the bright side, I can switch out the spring from a strut in about thirty-minutes now. LOL And I went with a similar setup, just used H&R Springs instead of Eibachs. They sponsored three of my builds back in my twenties, so I'm dedicated for life. That and the ride is perfect for me.