The arms will be supplied with 2,4 and 6mm shims for setting up length AND to rid the rear end crabing,have you ever the checked a landy on a proper wheel alignment set up .
Also i have some new bush retaining spacers being made as we speak to aid the chassis - arm flex.
Jez the plateing that my people do is not strictly nickle plating as we know it will let you know exactly what it is,we used it on the WRC car suspension arms on gravel events it never chipped,scratched or marked ??? also it was easy cleaned with duck oil and some scotch brite.
Chris