all the guides they sell now are of a much better material than in the 80s stuff, and the type of seal retention and the type of rubber is also different
i was referring too the valve guide material not the seal ( soft )
http://www.autohausaz.com/ this site has good prices if you can get all you need up front its fine but for us a week out on parts is no good i have a local parts store that has great MB Audi VW and alike and they have almost the same pricing less the shipping for me and its that day or the next
doing a valve job is what you are asking is a big deal for a novice, without having a real guy to help who has done it before and has real knowledge of what is entailed as well as some of the special tools needed i would not say go for it - unless the car is a hobby and something you have a real want to learn and try -- jz