Kika......

OK...Im gonna go out on a Limb here ....Try to follow along......

You have the Tornado, which is the same as the Rancho......

The Monsoon (Redcat Truggy) is Very similar, to the Rancho. In Fact, it is Based on the Rancho Drivetrain.
The Difference being wider suspension arms.....

ALL of these RC's are manufactured by HSP and rebadged by whatever company sells them....That is why so many Parts are interchangeable....
Are you with Me, so Far?.....Lol..

I believe that the Front and Rear Diff assemblies are the SAME on ALL these Trucks.....
If that is the case, you can use CEN Matrix ring and pinion gears part #MX040 and MX037 to replace the entire Rear Diff Capsule......
There is SOME minor modification involved.

Here is a link to a thread where it was done on a Monsoon....
Check it out...See if it is something you might be interested in....
http://www.rcuniverse.com/forum/fb.asp?m=7024929
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