Thanks just eye balling for now but if i take only roll center in to account. If I narrow it buy 3.5" and leave A arms as they are I can get the roll center back to stock ( narrow = raised ) by lowering it 2" and adjust the upper arm up or down. But by only narrowing the crossmember the bump should not be affected and thats the most notisable. Remember you can make any suspention work if you limit the travel...Jim