I can't remember completely offhand, but as I recall, the templates are fairly easy to find within the spacewalk data under /var. Just try a few things like "find /var/lib/spacewalk | grep ks" and I'd imagine they'd pop out.
BTW, When I was knee deep in Satellite and Cobbler, I found it significantly easier to broadly cut most ties between the two systems. The templating that is possible within Satellite / Spacewalk is very limited compared to just doing it yourself within Cobbler and editing the ks templates directly. I also coupled these builds with Puppet, using the actuql kickstart build to do as little as possible other than getting the new build registered within puppet and then letting puppet do the customized configuration of each type of system I built.