Install via dd (?)

Hi, does anybody know if it is possible to install freebsd on a disk from solaris/openbsd possible using dd or some other way.

Problems: sparc machine, No cdrom, freebsd jumpstart is a !!#¤!%, no other sparc machine witch scsi available..

I have bean searching if there is any way to do a freebsd install from openbsd onto disk2 but havent found anything.

Anybody have any tips ? Otherwise i have to keep trying the jumpstart or just go with openbsd/solaris/opensolaris