As my 100th accepted submission to RP.net, here is a nice mix of power with this consist: a SD45u leads, followed by #5501, a SD45B (rebuilt from SD45 #5581), with a trailing C30-7, # 8163.
Some good ol' classic power! A pair of SD45's and a F45.
#521 is about 3 years old at this time and is still looking pretty much like new.
NS power with a mixed consist, is crossing the Angelina River as it glides southward through the Piney Woods of east Texas on the UP ROW.
A SF30C, making every bit of track speed, leads a GP40X, SD45 and a GP20u up a 2% grade towards Amarillo, TX