You can get a replacemend SIDE SKIN for our cars and then use just what you need. It pretty much includes the A pillar, all the way up to the roof moldings down to the qtr. Removing the outer skin is much easir and probably all that is needed, I doubt you have significant rust to warrent going past the frame. Not to say it can't be done but you will become a huge risk as in if you have a shop do it, they probably wount, section the skin and frame in as it ist to much a liability and safty risk nowdays. But, it has and can be done.
Also you can get parts like you want off used cars at your junkyards. Often with inscurance companies they will get used blak halfs for the car if the cost results in cheaper that replacememnt pannes, this is primarly done with skins and if parts, such as rockers need sectioned in.
