The Vorteks has different chassis and mounting systems depending on model year and 2WD or 4WD. So, would need more info to help you. Best bet is to use the exploded diagrams in the support section on Arrma's website for your vehicle model and grab the appropriate part number from there. There should be enough adjustment in what you get to fit any same scale body to your vehicle. That said, even within 1/10 scale, the sizes vary greatly, so you have to confirm everything - wheelbase, overall width, and overall length. For certain shells, you will also have to verify the shock towers and electronics will all fit within the roof line of the selected body shell. Depending on the look you are going for, you'll also have to make sure the wheels fit within the wheel wells or that the shell is narrow enough for them to be outside of the shell during full suspension travel without rubbing.
On this particular build, I will need to create some offset front suspension arms to move the wheels about 10mm further forward. That will allow me to lower the shell a bit to get a more even ride height. The LWB version of this chassis was too long, so this is an example of a 1/10th scale body that falls between two different 1/10 scale wheelbases. Long-term I'll probably create my own roll cage style chassis for this body for a better scale look and function.
