Hey dee, thank you for clearing that up... It is what I meant but couldnt say.... They are all the same fundamental thing, (ring-balls-ring) something like a ball diff (if you know what I am trying to say) but design differences... sizes of the balls, the rings, whatever... Do you know what I mean, am I making sense...?
Anyways... look what I saw on the HPI R40 forum, I was over there yesterday doing a little "SERPENT Recruitment"

and wanted to see the reaction and found this, HPI

are trying to be more competitive, (not meaning anything by it

)
Current R40 owners dont despair! There is a conversion kit which contains EVERYTHING you need for the conversion except the titanium screwset, that includes the 0.8 module gears. The 0.8 module gears also come with the 2004 kit. The conversion kit should only run 100-120 bux which is pretty darned good. The best part of this is you will have all the spares left over from your converted car.
I am not a huge fan of 0.8 module gears in fact, as my V1R was eating them up very quickly. The certainly wear and get damaged much faster than the stock gears.
Shame... SERPENT KICKS A..
About the servos...
Multiplex seems to be supported by HITEC, but looks like something different. I would love to get a KO servo, but the COST!!! I cant justify $99... but I suppose I need the best as I will have the best (S710)

cant wait, but at least it is better than the equivalent of ~$210 here...