Its best just to get the parts made for your car, because if you have to mail order them, and the part you ordered dosent fit, thats a solid two maybe three weeks of downtime waiting for your part. I know that some parts on certain vehicles, like the Madbeast from exceed and savage from HPI are fairly interchangeable, the madbeast is just a real !@#$ty copy of the savage. and the forza from exceed works with alot of 1/10 scale from OFNA and Kyosho. I've actually got a forza brake disc system installed on my jato, and it works ten times better than the stock one. Its all just a trial and error thing if you wanna do it that way. But to make it easier, I'm assuming your a beginner, just order parts made for your car. Because that disk brake mod required dremeling, sanding and cutting metal to complete. Somthing that I was concerned about doing to my Jato even with 4 or 5 years of experience.