[Panelfantastic]

Roo, we are definately talking the same talk. I think you are spot on with the offset idea. My whole deal with rotating the pivot was definately nessecary, I think the PO set it up wrong when he did the IRS conversion. IRS is supposed to be more forgiving on the lowering/camber issue but mine had some serious camber / \ . While looking in at the mount from the side, imagine a clock face. My mounts were originally "clocked" at about 7:00. I've now rotated them up to almost 9:00. That is a huge amount! and I think they were that much off when the conversion was done...
I don't have a fixed mount on the frame for the heim yet. I'm going to assemble the whole arm with my new heim link/bar installed on the arm already and that magic pivot line already set (off of the vehicle) . Then bolt it to the bus using the inner mount, eyeball my toe alignment and let the heim point to where it wants it's mount to be... hope this makes sense and you can agree with my direction.
You mentioned moving the inner pivot in or out... according to another forum member, this is a geometry no-no. That pivot point is supposed to line up with the output flange on the transaxle (if you drew a line across the flange straight forward, it would intersect the pivot). Now having said that... it is impossible to do on my bus. Bus was not designed to have IRS and the frame horns widen out up there at the torsion tube. My mounts are over an inch outset past the magic pivot line. How much does this affect my suspension?... who knows... at this point, I am so far removed from what the engineers designed, it will be a miracle if it works...but I am gonna try and it is gonna be cool!