it's the Road Master version, if you need the model let me know and I'll look it up. I think there is only one for the F53 chassis but I've been wrong before.
Made a huge difference going around corners and the Semis coming past at 100 mph.
I had it installed because my 400lbs impact wouldn't budge the huge bolts in the rear end and I couldn't get a long enough breaker bar to get them. The truck shop charged $90.00. it looks like a 30 minute job, I don't know their hourly rate. The alignment they did at the same time was about $170 or so I don't remember
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