But not sure how to deal with the associated headers files though.
Please mirror the whole legacy tree -- this would make ftp.funet.fi "yum enabled" which would make a _lot_ of people very happy in Finland!
ftp.jyu.fi offers their RHL RPMs via apt but not with yum, if I remember correctly. And yum is becomind the standard with RH users.
If you don't want to store RHL os/updates RPMs twice then stop mirroring them from ftp.redhat.com?
Regards, Peter