Officially think 400ex a arms are a huge waste of time. If using oem ball joints yes the swap is easy. If using removable ones on oem arms it's a crap shoot. Oem 300ex arms with removable ball joints was perfect. The way the 400 upper is welded together vs the 300 is where all the issues lie. At this point I should of just built +2 300ex arm.
I cam not use 300ex spindle due to causes me positive camber. My upper houser ball joints are ar 21 degree angle, 25 degree would of been on the money I think.
Either way I have to mill off 1/4" of the lower 400ex spindles. It hits my a arm. Love how a 5 min job turns to hours of work.
Oh well, typical game when you do things no one else does.
Tomorrow I focus on air box. Until front end is bolted in place with no binding at all I won't figure out new brake line lenghts.
Looks more like an atv however.