[Jeff Lee]

I built my car with a complete MW Dana 60 w/ CM tubes and used the ultra-light 40 spline axles. I wanted the 40 spline for the strength in a 3160# -3320# stick car and as Stocker axles are long (compared to a comp car for example) I wanted the weight out. I bought with the lightened ring gear and the light-weight STEEL spool as I believed an aluminum spool was too much of a strength compromise. I can not document the ET savings as I have always had it in my car. I do know that I have NEVER had a rear-end problem and have changed gears several times and they always look brand new. Same with the axles.
So is it worth it? I don't know but the piece of mind is priceless. Of course some people can't substantiate the cost difference of anything pricier than Moser.
And the stories I hear are an aluminum spool and driveshaft are crucial on the small engine cars (300" or less).