Hello,i have a few cars and was wondering how the radlines from target are.What about if i buy on then put the motor upgrade on?HOw would they be just as a car to mess around with?

I'd steer clear of them, they're really just toys with upgrade options - not true hobby grade R/C vehicles.

Those are toy grade rc cars unlike your rustler and rs4 that are hobby grade . Toy grade don`t have much upgrades or parts support available .

Have to agree with the others they are toys not hobby grade or worth your time.