Brake lines tend to be similiar at connection points ( I assume you are talking hydraulic lines)
When I extended my 94 lines I just got some that measured longer, figured it out by talking to the parts store guys. Mine ended up being like f250 lines or something, can't remember. Think I only needed three for mine though, the rears are run from a single line into a tee on the axle tube, then hardline.
You can extend emergency brake lines by looking for a generic replacement kit that you can cut to size.