generally "turns" term is used more for brushed motors and respectively "kv" to rate the brushless ones (even though both types of motors internally do have "turns" of wire around a core and also a kv rating, but that's an other topic)
roughly the less turns a brushed motor has the more RPM (rounds per minute) will give, but at the same time less torque will have.
now regarding compatibility, in terms of "will it bolt on my car" the answer is: yes it will. the question is more like " will be ok for this type of car (and on-road rally) and will it be fun to drive etc, that's an other question
for that you need to check each motor's recommended gearing chart (it's a chart showing the various combination of pinion and spur great that will make the motor perform correctly (without over heating))
then you need to check if you can find these gears (as hoop-ups, or after market) for you car in order to experiment a bit
I know that all this might sound like complicate but, hey, that's the beauty of it, spending time (and money :-) searching, asking, experimenting, assembling, testing, driving and so on, of this hobby