There is an Xray one, but it's not great.
MP9E can only take two stick packs (if using ~140mm length packs).
The Hyper 9E was good (I had one) but the wishbones are weak and break at odd times - not often in big crashes, but seemingly at random.
There will be an RC8BE I seem to remember reading somewhere.
Ve8 - only US guys have been able to run a lot of hours through these - the aluminium skids are a good bet (I've got them fitted). RC-Monster are working on an aluminium chassis kit for it.
Mugen don't do a kit.
There are no problems with the aftermarket kits. In my opinion they are mostly superior to the manufacturer's own kits. (With the exceptions of the 9E and Ve8, where it's not really a conversion in the same way).
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