Here is a suspension option....
Should hold 300Kg
Thats exactly what im looking at although im tempted to go with the air bags for vertical load carrying
problem is its sitting there nice and shiny black
the minute i try and mod it ill have to re paint the whole thing
and not to sure what that does for the rego compliance
in my experience building this one the hardest part was getting it past roadworthy
especially when you consider the national standard differs in places from the WA one
I built mine to the national standard - bad move that !!!
thinking plan B is to sell this one and start again