@Re~Mix,I'd bet the new belts would be fine too.As far as the x5 conversion goes i'd actually leave it as it is with center motor,it's not like it'll be short of acceleration anyway;)
i might ask Mike if he can get hold of one.They say limited production but once they see the demand you can bet it won't be.I heard the wishbones now have the new cross bracing/webbing for more strength,they've been 'cleaning up the molds' any way due to the x5,so there could be a few little tweaks here and there.
Here's the spec:
http://www.horizonhobby.com/Shop/ByC...rodID=LOSA0011