Yea, I've seen pics and even video of a rear exit SRT that was in Euro somewhere. Sorry I didn't save that link. I do remember it wasn't done great on the sides, and the rear reminded me of my RT/10.
Having had a RT/10 with the belanger setup out the rear, and the SRT with a track back Corsa (which is as load as I can take it due to the side exists) I'd functionally prefer the rear exit, my RT/10 sounded soooooo good & didn't cause me to go deaf in my left ear.