Would it work?
 

I have this little on road car, http://www.rcpics.net/img/81706 and an extra Feigao 9L laying around. I know this motor is probably a little overkill for this car but, A) it bolts right in, and B) I allready have it. I would be running it on a 4s 4000mah that fits right in.
Pros and cons please.
Thanks.

It will kill the drivetrain in the blink of an eye. And since that vehicle is anciant the parts are not easy to pick up.

Bad idea imo.

Bummer.
What brushless setup would be recomended then that I could run a 3 or 4s on it.
Thanks.

The easiest mamba-maxx.

So would a 7700kv Mamba Max be faster than the 4600kv?
Thanks.

Correct.

Or you can use the 5k mamba motor with 3s is faster for sure, but I cant guarantee the safty of your rig.

Why is the 5k faster than the 7?
Thanks.

Yeah, the lowest kv is easy on the drivetrain.

Because you can run it on a higher voltage.. :p

It could be an old MGM touring car. The drivetrain is quite similar to a car owned by an Austrian friend of mine made by an ambeguous company called MGM.

It has an MG body that came with it, does that meen anything? Never heard of MGM though.

Yeah! It's MG and not MGM, sorry I got a bit confused.

So just to recap, the 5700kv on 3s will be faster (top end) than the 7700kv on 3s?
Thanks.

he means that the 5700 on 3s would be faster the the 7700 on 2s. I think the 7700 on 3s would basically be uncontrollable.
also nice sky.