Seriously? Lighter??? Weighing cars in ounces these days are we? I can go on and on about making something lightweight...nylon fasteners, titanium, carbon fiber, etc etc. I wouldnt consider a heim joint setup any lighter than a tie rod end...if it is, it is VERY minimal. Im sure there are plenty of other places to save weight on these cars.
As for adjustability...I can see that, but if you have factory geometry suspension, you wont get the steering angle much better than it already is. Im glad some other people realize this as well...
Sorry to Hi-Jack...