gcc versions following upgrade 6.3 >7.0

[david at vizion2000.net]

FreeBSD **.vizion2000.net 7.0-STABLE FreeBSD 7.0-STABLE #0: Wed Jul 16
09:27:38 PDT 2008     @**.vizion2000.net:/usr/obj/usr/src/sys/GENERIC  amd64
# pkg_info |grep gcc
gcc-4.1.3_20080630  GNU Compiler Collection 4.1
gcc-4.2.5_20080702  GNU Compiler Collection 4.2
gccmakedep-1.0.2    Create dependencies in makefiles using 'gcc -M'

Should both versions be installed?
Do they not place files in same place?

System has just been upgraded from 6.3 to 7.0-Stable.


David