Thank you Peter.
Having fitted the kit I can thoroughly recommend the springs. I have now done about 500 miles and have not bottomed out over speed bumps or had any issues whatsoever. The instructions were straight forward when you start taking the suspension apart. The reassembly is easier, as there is no load on the spring, and the adjusters allow you to balance the two sides and get the height right.
The handling inspires confidence.
I have no connection with Suplex. I am self taught but have a lot of experience taking apart and rebuilding Morgans.