OK, This is wearing me out ?
Rethinking the chassis, I'm seriously reconsidering the Tekno and going with the RCM mount. I really wanted to retain mechanical brakes but If I can get a smart diff to work in the center I may get the steering I want in the corners. I was thinking the mechanical brakes would help in the apex of getting the buggy to turn/rotate better but it would scrub off speed the smart diff may retain ?
Going with the RCM mount and battery tray will be cheaper and lighter than the Tekno mount and extra servo ? Decisions Decisions UUUGGGGHHHH

That's the way I view it and I went the less weight route. I was considering putting a slipperential in my RC8 but not until I had the chance to test it out more. I may want to go with some sort of smart diff.

I wouldn't bother with the mech brakes, I can't tell the difference between motor brakes and mechanical brakes.

As for the smart diff, it should fit fine, though the bearings are going to be a problem - Losi is imperial, and uses funny size bearings anyway. I'd just run a slipperential - the spur is already the right size too, though so is the Losi spur.

I'm running the stock diff oil and it seems to be fine though I am running a stupidly heavy buggy (with a 6S 6100mAh battery!). 4.1kg:oh:. I'll get some pics eventually.

I am working on CAD designs for a quick release battery design similar to that of a cordless drill, it will allow 5 second pit stops, and the use of a battery that is only 356g. It should be good, fingers crossed.

Mr. Marvin,
What are the Fluid weights that come in the kit ??
So you really think The Slipperential would be a wiser application over the smart diff ?
Our Tracks here are small and tight and I theorized the SD would allow better radius.

I can't for the life of me remember what fluids are in the kit, #400 Shock Oil? 5000 Fr and Centre diff, 3000 for rear?

Give the Smart Diff a go, if you don't like it, or it doesn't fit, it will be easy to sell on.

Oh, and Marvin is just a nick name, I'm Simon really.

So your running the Kit diff fluids ? The front doesn't unload to badly ??