Figure i would post information on my costume set of chromoly upper control arms with spherical uni-ball and a grade 8 pin.
This was a must for my one off lift, i kept tearing my upper ball joins (8 to be exact) when i was experimenting with lifts.
I came across a guy with a heavy modded XK that had the same issue i had so he decided to have some custom built, first attempt was total chaos fabrication which rejected the project ( i think it's because they favor the yotas!) he came across HR engineering suspension which agreed to build a few, Getlost4x4.com was chossen to be the vendor.
So far i have wheeled with them and have had them for about a year or so and have held up to my abuse! here are a few pictures of the UCA's.