GO TO WWW.MOPARSTYLES.COM,.. TALK TO BK ,..HE SHOWS HOW THERE DOING CAL-TRACSmopowers said:I measured about 3 1/8" on the outside of the spring eye bushing and tube. But I want to have room for two 3/16" plates for my cal-tracs I'm making plus washers. I have a 4 footer of 4x4 1/8 wall square steel tube. I going to cut it length-wise to fit. I was just curious what the mopar kit's width was.