... just thought you should know are the Australian Dobinson's Springs Brand which has a reputation of arguably being the best. I also had them on My patrol and they were excellent. I learned of this through Dobinson's Sydney's Sales Manager who was sending out some springs for me.
Out of interest Dobb's also do torsion bars for the Sho/Paj/Monty's but we don't get them here in the UK. Don't know why though.