Ok, i have got somebody (thanks chris
) who will make a mould so i can make some shells for the Slim4, so the floor is open what shells do you really like (if poss post a picture) and what features you like.
One thing there will be is a scoop / intake where the motor is also a outlet scoop just after it, so air can go in over the motor and straight out again.
Remember the chassis is 95mm wide, a lot less than most cars so some things may look out odd.
Attached a shot of the durango, i like this a lot to be honest.