With a standard servo you will get an odd angle on the steering link, if you're not able to shim alot under the ballstuds. Other then that it would be no problem, it's all up to what body you use.
With the X6 body it won't fit. With the Jconcept Illuzion B44 i will use, i think it might work, not sure.
Worth to know from my test experience: I thought this would be a high grip car, but it accually has worked best outdoor on low grip dirt. Might be the layout of the battery, might be the quite soft chassis of the prototype.
The new X7 is really stiff! It wasn't ment to be, i think it's just to well build
I'm in the last phase now, building it together, test on sunday!