Yes no tunnels ...
Lighter , less roll from the weight up high ...
Even the chassis stiffener is lowered 4 mm .
Dust is no issue on indoor clay really,
so ditch the covers
Note the slammed servo , a little lower for improved COG
Motor runs cooler with out the gear cover >>bonus
That's 3 x 7 gram on each side of servo , I also have 2 x 7gram next to motor pinion on chassis to help off set the 550 & ESC weight .
With the shorty you can run lower then normal giving extra performance in the turns .
Been working on the past 2 years , testing & experimenting .
Not all is my idea's , I used others as well my own .