Did a search and found zip and have not yet got a manual so maybe someone can help?

I need an idea on what is involved in changing my front coils to 2'' drop coils if I do it myself. My frontend shop was going to do it and then the SOB changes his mind and tells me he won't do any lowering work.

Then on the rear I got to find someone to do the hangers as I hear that is a big headache.

Thanks!