Just bought all of my rear suspension stuff from these guys http://www.wolferacecraft.com/SearchResult.aspx?CategoryID=10. Why? Well on my buddy car this stuff works, and works well, so based on that experience, that is what I am going with. Plus it did not hurt that when I placed the order today, I found out that everything was 20% off!
Edit: Let it be known that I do not care who's stuff you put on your car, if the geometry is not right it is not going to work, I don't care how much you paid for it............
Wolfe is known for quite the drag radial car, so above and beyond your friends experience, it's some of the best stuff hands down if you only want to go in straight line.