Yeah I couldn't find it either but I was sure I saw it before and, key part is, that it fits. If I go that route the modded/vented PSU shroud would get incidental airflow from the angled intake (likely more than on conventional cases), and without a vent where the usual PSU vent is, the air isn't going anywhere, so I likely won't need the fan on top of the PSU shroud. In that scenario the only reason to up the speed on the middle fan on the DRP3 (and no front fan on it either) is to have enough pressure to move air out faster over the 120mm exhaust port where there isn't an exhaust fan to actively pull the air out. In which case I'll have to test all component temps to see if it will actually make a difference on other bits like all the stuff on the mobo that has heatsinks between the I/O panel and the CPU socket. If not, might as well leave the fan running at minimum and only ramping up if I hit 50deg C.
For reference on the Dark Rock 3's (not the Pro) cooling capabilities, my brother recently built an Enthoo Mini for my cousin, and I did the fan and OC tuning. Light OC (ie just +400mhz through the mobo software) on the 6600K, ambient in my room when I did the testing was a searing 38deg C, and after four runs of Total War: Attila's benchmark I only got momentary peaks at 62deg C. The fan ramping up from around 500rpm cools it back down. For the most part, MSI Afterburner showed roughly an average of about 53deg C throughout those runs. He has A/C in his room (and solar power helping out) and said that if it wasn't for the lighting on his mouse he wouldn't know the computer was running. This is what got me thinking about how much less noise I can get with the FT03 and DRP3 given convection. If anything the only disadvantage it has is that it'll use at best a 120mm intake, unlike the 200mm intake on the Enthoo Mini.