"gcc -V <version> Run gcc version number <version>, if installed.
I'd like to try and compile bahamut using version 2.xx"
Do you have version 2.xx installed? If so then you can simply use the full path name for the alternate version of gcc, i.e.
If you want to install an old version of the compiler then you will probably also have to install the corresponding version of glibc.
Also I recommend gcc 2.95 as being an excellent release of gcc.
Be prepared. Create a LifeBoat CD.