Currently running a 6.5 and I love it in my wheeler.
Looks like plenty of room for lots of different motors and esc's when running shorty packs. A tekin hd 4300 will be a little heavier with an insane amount of torque.If you're just having fun, try it and see if it works.
The traction along with big motors caused most other cars to break at some point at the Worlds (but the D413 held up fine). Installing a Tekin hd 4300, and putting it in the hands of someone other than Ty seems like it would be good durability testing
