I installed a couple of rac (but (9.0.1) on Solaris + Sun Cluster 3.0.
!!! NOTE withourt Veritas software.

What u need to check before installation :

-- does oracle can work with shared files or only with raw devices in ur configuration.
(in my case it was raw devices only)
-- check structure of private and public networks
(!!!AND use ONLY public network addresses in tnshames.ora)
-- choose type of installatiion
(i used oracle installer only for installation of software,
all others procedures i did manually)
-- if u have to use raw devices then check type of devices in /dev...
(MUST BE block raw devices and size of each raw device MUST BE more larger then
size of datafile or redolog file)
-- reseach all addition information about rac

good luck.