Thanks John
That back spacing, is that true for 65 on? I thought 67's didnt have an issue 4.5" spacing. At least i haven't noticed anything rubbing.A wheel with 4.25" of backspacing fits with no mods to the upper arm. If you grind on the ball joint dome a bit, you can use a wheel with 4.50" of backspacing. On my next project I'm using a wheel with 4.75" of backspacing. The ball joint dome is cut back and braced, looks like this.