Our Xray 808 conversions were all faster than the 808E purpose built car.
That feedback likely made it back to Xray. The 808E had the motor further back and had twitchy arse heavy handling, almost like the Serpent.
So that's partly why the XB9E is just a lazy conversion. If it ain't broke, don't fix it. I also think they lost their butts on the 808E, so why make another unprofitable kit. The conversion is cheap and easy.
No guides for wires needed. My ESC servo wire is wrapped in fuel line and goes over the diff brace into the switch hole on the Rx box. Works flawlessly. Motor and battery wires are so short it's a non issue.
I'm thinking about converting an Xb8, but I don't need the latest and greatest, all the time.