Dual N40 motor mount for WPL/JJRC cars

Because N40 motors are much bigger than N20 that I use I redesigned dual motor mount and created Dual N40 motor mount for WPL/JJRC cars :)
I tested it on My modified WPL B-1 and that worked great.
Here are motors that I use:
https://www.banggood.com/Machifit-13GA050-6V-150rpm-DC-Electronic-Speed-Reduction-Gear-Motor-with-Metal-Gearbox-For-Elevator-p-1341680.html?p=5G2717320323201310AJ&utm_campaign=Adrian&utm_content=3312
this motors are strong but slow but I wanted to simulate heavy load beh