Cisco VPN installer

Has anyone managed to either get a stock Cisco VPN installer metapackage, or re-package the VPN installer metapackage so that it works with InstaDMG? I'm having the worst problems with getting that to apply properly to my InstaDMG image. I think the biggest problem are that the postflight scripts aren't applying, and Cisco uses those to make a number of symbolic links and also to fix the correct file permissions.