Here's a nandroid backup of Stock 2.3.4 (GRJ22) rooted from my GT-I9020T. Just extract the zip and place the folder that's inside the zip into the /sdcard/clockworkmod/backup folder on your phone. Then reboot your phone into recovery and restore the backup that says "Stock_2.3.4_rooted"
I've only tested this on my phone but hopefully it should work for you. You may want to install Busybox after.
NOTE: the zip that you download contains another folder within it so when you extract it, make sure you use the folder inside and not the actual extracted folder.
Thanks to ChainsDD for superuser access and Google for Android