What tegbooster said + 1. It probably took me a week to build my setup and about 4 months of research, reading everything I could get my hands on ls-vtec builds before I even decided to start my build, I also asked questions to make sure I was going in the right direction with it.

Do as much research as you can and make sure your confident in what you are doing before you attempt this build. I used the GE LS-VTEC kit on my engine, it's a nice kit.