Gday Paul
Many people retrofit mounts with Meade motors and the 497 handsets,
so its not a fools errand.
Check out the Yahoo Roboscope group for more technical info
http://tech.groups.yahoo.com/group/RoboScope/
I'm not sure how easy it is to use the EQ5/6 systems, but,
the Meade system is very flexible and can be tuned to suit many different
geartrain arrangements and mount setups.
Andrew