TrainFan did a HELL of job in a very short amount of time creating Class 800/0 & 800/3 liveries for GWR out of the 801, and a nice GWR 387 out of the Gatwick model. He now has 4 scenarios that allow travel in each direction for the IET & the 387. There are even a few 166's in there as well! If you're looking to enjoy this route in a modern light, I highly recommend grabbing these from the Creation Center. With Foob's God Mode mod, you can change up the weather & time of day to your liking...