OT: resize a FreeBSD slice on a hard drive in a PPC Mac?

[Torfinn Ingolfsen]

Hello,

Which tool can I use to resize a partition / slice on a hard drive in a PowerPC Mac?
The layout on my FreeBSD hard drive in my G5 currently looks like this:
root at kg-g5# gpart show ad0
=>       18  625142430  ad0  APM  (298G)
         18       1600    1  apple-boot  (800K)
       1618  616562688    2  freebsd-ufs  (294G)
  616564306    8388608    3  freebsd-swap  (4.0G)
  624952914     189534       - free -  (93M)

I want to have several versions of FreeBSD on it, and thus need to resize it.
Normally I would just use GNU parted for this, but haven't been able to locate a image with that on which will boot on a PPC mac.

If not possible I will have to reinstall everything.
-- 
Torfinn