stiffest springs available? 510lb-is that it!?

Bearmach do 510lb but they are 40mm lift

Just looking for standard but as high lb rating as possible

(sick of passengers moaning about going too fast and about to roll over etc)

Dont mind hard ride

Any other nutters out there found 1000lb springs etc?

Disclaimer: I do no off-road and tow 3.5t usually

Drive slower or fit ARBs?

Hi
I just don't slow down on corners - waste of fuel.

Closest thing I have found is air spring helper rated at 1000lb

Old man emu heavy rate are supposed to rattle your teeth out.
I had a link to a uk spring manufacturer who made them bespoke but lost it. They were quite cheap as well

Neil Satur <[email protected]> quoted 250 plus VAT for 1000lb springs all round

Found it http://www.dfaulknersprings.com

Have you thought about an anti roll bar, if you don't have one already?

I agree with the others^^^^^^^^^, that isn't going to be a pleasure to drive.
Many years ago, I fitted XHD leaf springs to my 109. They were effectively rigid unless you had about half a ton in the back!
My lower back has never been the same since!

When I had HD springs all round in my 90, when empty it was very 'skippy' especially on wet manholes etc

Progressive springs might be better than straight 1000lbs ones