I built a trailer the other day using some old dodge caravan springs and axle, but they are too soft, but the hangers are already welded. They are like 2.5" wide and 47" eye to eye. Anyone know if CJ or YJ springs are about the same? I can't find any here at the local junk yard so I was thinking of ordering some from JC whitney, but I need to know if they will fit first. Thanks.