Ok so decided on getting a valve job. I'm looking around at kits but there's so many and why is it that most of them only come with the intake side? Should I only be doing my intake side if my exhaust is in spec? I think I've decided on the kibble white brand that seams to be what some ppl recommend in whatever little threads I've found. Does anyone recommend another brand or know of a site that sells a full kit? Thanx in advance.