SPOOOBY
New member
There may be other differences in the ends (I couldn't tell), but the Heavy Duty (9704) is 1 1/2 inch diameter rod and the Extreme Duty (9703) is 1 5/8 inch diameter rod. Both have a 2 year warranty.
For 1/8", I can't see that being $350 better, but that's just me.
the extreme duty has rebuildable ball joint ends
If you're not living, your dead already