Hi, i don't mean to advertise but I'm an official distributor for T3 parts in Australia.
Andrew, that only part that has ever had any trouble is a panhard which doesn't take a beating like a bushed one does.
I'm not as familia with pre ke70 tuning, but if you able to swap to sprinter struts then that give you a huge chose when it comes to suspension.
Andrew that big brake kit that I offer is of very high quality. wilwood 4 piston callipers and 280mm vented, slotted and drilled rotors! braided lines, brackets, different pads. I don't know how you can get much better than that? Wilwood is a highly respected brand and the rotors have been tried and tested.
Andrew if you wish to comment on your own personal experiences with your unsatisfaction please feel free to comment me, I'm always keen to hear feed back on products I sell, although you buy anything from me..