Has anyone successfully used the USCartool A500 Crossmember?

Well the next step is under way. Just dropped my driveshaft at Boulder driveline services, to get it shortened. 45-3/8" is what I came up with for the length. Hope I got that right. Measured it like half a dozen times.
He said probably less than $150.
He has to replace the rear yoke. My drive shaft is fat for most of it's length, then necks down near the ends. Because of the amount he has to remove he'll have to get a yoke to fit the fatter part of the shaft.