Not sure if rear mounted saddle pack is the best way to go with 1/8 electric. I was convinced earlier this year that it would work and so converted my mbx6to an almost identical layout to this car. I found it lacked steering and wasn't actually as balanced in terms of handling as I expected. I'm also a recent convert to mechanical brakes after discovering how much more stopping power and additional efficiency can be gained over direct drive. a clutch is also a very important part of getting a 4wd to handle, especially over rough or loose terrain. both these things can require a bit more space than looks to be available in this chassis. about to buy a tekno v4 kit with traction drive and if it ain't any better than my current car then I might look at this one but will definitely be looking at ways to mount mechanical brakes and a slipperential.