The RCPD kit is great. The tray fits just like the original mud guards and keeps the factory look of the car. It also maintains the stock body fitment. The balance of the car with the RCPD kit installed as you see above running Tekin electronics and a Thunder Power 40c 5000 pack is spot on with that of my Caster EX1R Pro. The Caster buggy runs saddle packs and is by far the nicest layout to date.
I am not affiliated with RCPD, but their kit is the best on the market.
If I were to build the best EMP9 I would run the RCPD top plate and battery tray with an Elite motor mount.