Shackle Question

Does anyone know the width of the rear springs at the point where the shacle would connect the spring to the frame?

I know I could run all the way out to my X with a tape measure, however it's at least a 15 minute round trip here at work.

Thanks.

I don't know the measurements off the top of my head, bit the frame mounting point is wider then the spring.. The bolt sizes are different also, somthing about bushings i think..