Hi, BDC
According to the info I had, the D&RGW SD40T-2 #5408 (and the #5402) was/were wrecked on Tennessee Pass the 2/7/1989, retired and then sold to National Rail Equipment Corp., that scrapped it around June 1991.
The D&RGW SD40T-2 #5348 (and the #5370) was/were wrecked at Pando, CO, the 11/22/1994, and retired the 2/17/1995.
No more details about (I suppose that you don't want any, either)