Just to note you can use Resize Raccoon instead of SRWE. Using this means it will apply for you automatically and you dont have to load your file everytime. Thanks for the iRacing video, really helped me out dialling everything in :)
This is the best solution I’ve heard of for mismatched sizes and a wide center: you’ll want to set iRacing to run as if it were 3x your wide monitor (10320 x 1440 resolution as if it were 3x 34”). It will have to render all of those pixels but crop out the unused pixels from the 27” sides, so while it’s not ideal for performance, it does still display exactly what you’re looking for.