I got my Helms manual from
http://www.helminc.com/helm/Result.a...4X23E6GWL844C7
It was worth every penny.
Oh, yeah if your doing shows and stuff then yeah thats the cheap way to do it.
As far as the dual exhaust you'll probably have to get that done at an exhaust shop. Your in Socal so I'm sure theres 100 shops out there that can do it.