Well, I ended up purchasing the Cyber 10b. Been patiently waiting for a 4wd that takes stick packs and comes in a Kit.
I'm part way through the build. The only real surprise so far is no bearings were provided for the diffs. Bushings instead. Some of the center-shaft outdrives are plastic, but that could be a non-issue.
Something very minor - it would have been nice if the manual said the 0.2mm shims were silver and the 0.1mm shims were copper. Quite challenging to work this out yourself at 11pm at night under a fluro light.
Other than that, quality of the parts appear excellent. The plastics have a nice tactile feel and are well moulded. Would strongly suggest using proper hex drivers to make the building experience more enjoyable. Using an Allen key will lead to pain
I was lucky enough to find a second-hand D4 that came with enough parts to fully outfit the Cyber 10b. D4 shocks, WCE slipper, rear CVDs, etc. Eyeballing, everything looks like it will fit except for the center shaft CVDs. Will be able to confirm later this evening.
Here's a question - in the manual it indicates to add diff lube to the ends of all the dogbones. Does anyone do this in practise? My experience is it collects dirt and causes more damage.
Wondering if I should also diff lube the gearbox gears as per the manual. I've never done this to my 2wd Losi but not 100% sure if this is something unique to the HPI plastic gears.