You need the General Dynamics iso
If you want a "no nonsense" install of Solaris on that particular laptop, you will want to go get the Tadpole Solaris 10 ISO for doing the install.
You will also need a Solaris 10 03/05 (sparc) DVD as well.
Tadpole did a pretty amazing job (especially at that time) of making that machine work, completely. I.e. the wireless, sound, video, battery monitor, etc... all works. With a sparc release. This seems like a small task, but if you take the time to simply install a Sun release, you will see exactly how difficult it is to make everything work.
http://www.tadpole.com/product_support/downloads.asp
I don't recall the specific steps, but I believe you boot from the Tadpole DVD and it will later ask for the Solaris 10 DVD.
Good luck. Let me know if you have any issues and I can try and help you out.