Body panel assembly manual.. does it exist?

Lee Robinson said
There is a leaded area that covers the cowl ends and A pillar area. You'll need to melt out the lead to see how they are joined. Get an AMD catalog,
it sounds like you're going to need a lot of parts.

I have an a pillar assembly and rockers for it from a member on here. I was wondering if there was lead in that joint, thanks!
Will a propane torch get hot enough to melt that out? I guess I'd have to be careful not to warp stuff. I'm not sure if I'm going to replace the whole pillar in one piece or cut out the bad parts on this to piece in.
Goes without saying, I have no idea WTF I'm doing, lol.. but learning here :)