It would help if you posted which servos are included, but in the vast majority of cases, the servos used in 1/10 and 1/8 are the same size so fit shouldn't be an issue.

As for specs, a 1/8 scale servo should also have no problem steering a SCTE but there may be a problem with amp draw depending on which ESC you use. Many people have had problems when running a Caslte MMP with high torque digital servos but there are simple solutions that should allow you to run it regardless.

Post the speifics of which equipment you're looking at and we can give you much better advice.

Star