You need these old school 5292 puppies ;-) 2 of them.
Check a motor comparison here
You're gonna have to do some after-market mods but those are very powerful , I have them from the 8366 set. But as you can see in the review, there are pro's and con's on every engine.
I suggest reading it in full, it's an amazing source of information and you'll learn a lot like I did. There's a nice poster about them.
It has 2 different outputs which makes it so fun to make something that can use them both. Speed or torque. They will drain your batteries for sure anyway you use it.