Good job on the front end, Sierras need that mod to behave on the track when lowered. Marc have u measured the rear rollcenterhieght with your modified beam? Looked for that info all over the net but cant find anyone who have checked it. Going to do my own rear beam in a couple of weeks and thats a good opportunity to change the rollcenter. I'll probably try to move up my inner rear trailing arm mount abit to raise it.

// Jimmy