[MarkB]

Originally Posted by voucht

Tilly, yes, it would be great, thank you for the link, but honestly, I want to keep the modifications as simple as possible, so I think I will go for an extension "box" as on the Robin Hood, as Phil advised (I'll post the design of the extension as soon as it is finished, to have your opinions about it)
According to my 3D simulations, I should be able to use 11'' coilovers front and rear. Which leads to an answer for MarkB : the stroke of a 11'' is 3'', do you think it is enough ? The 13'' have a 4'' stroke, so I'm loosing about 25mm of travel.
Thanks for your comments.

In an ideal world you want to be setting the shock mounting positions 60/40. Be very careful when remounting the upper brackets as they need to be well braced and all forces directed into a braced chassis.