[tonythetarga]

Lowering the car and taking things apart before you know what you're doing and what the consequences are is a bit foolish in my opinion. This procedure is a DIY job when you're prepared and have the tools and time to do it. Have you found the spring plate angle calculator yet? Do you know your cars actual weight?

I might suggest you get a copy of 101 Projects for your 911 and do a bit of research if you want to do this right. Then when it is all done, take it in to a proper race shop or good independent Porsche shop for a 4 wheel alignment and corner balance, which is critical for safe driving, street or track.