If you got yours from Travis, then yes I'm sure it has been beat pretty good 
my D300 has 4:1 and HD outputs front and rear and I run 1410 joints, no failures yet on the D300 in the last year. I did manage to break a front joint at The Flats and twisted the rear driveshaft tube into 2 pieces. The D300 HD outputs held with the LQ4, tons, and 47"LTBs
