i had advice from mike rainbird about fitting 4 pots to the rear of my 2wd saff and he told me very clearly i would end up in a ditch lol
he said its ok on a 4wd as the wheels are linked mechanically , but on a 2wd you firstly would have to fit a bias valve and you would have to bias it that much to the front that it would leave the 4 pots doing little or nothing on the rear .