I have been asking around about custom made torsion bars and the Aussiefrogs website happen to be doing a group buy! The buy was set up for Peugeots but the company (don't know who it is?) will make any similar bar at up to 25mm thickness as that's the diameter of the stock bar.
The downside is the price. For a single set the RRP is A$1200!!!! but, with the group buy it will work out at A$700 a set. :( The Renaultpower sets work out at A$600 plus shipping so for me, it's about the same price.
I have found a different company myself but to get a quote I need to send them the specs or my TBs as a sample to take dimensions from.
https://www.rtoc.org/files/Miscellane...orsion_Bar.pdf