1/8th flywheel/shoes won't work with a 1/10th clutchbell. The shoes are taller than 1/10 by quite a bit. The 1/10 bell housing would only cover half the shoe. Odds are, there wouldn't be room for it anyway.
When I ran a 1/8th clutch on my revo, I had to move the transmission forward about 1/4" to get enough space to fit it with the proper bell. To do that, I had to grind the chassis so it could slide forward and elongate the trans mount holes. There was barely a gap behind the flywheel. I had to add an extension to the pilot shaft as well because the 1/10th shaft wasn't long enough. In the end, it was worth the hassle for me, since I ended up running a big block. When I first did the mod, I was running a 2.5 chassis with a OS18TM, which was chewing up clutches quite frequently.
On my 21TM revo, I bought it used and it came with MIP center axles. With stock axles, you have some leeway with the sliders. With normal CVD's, I didn't. I gave up on the carbon stock clutch pretty quick and tried an integy 2-shoe. I ended up with a dynamite max life 2 shoe set, which has been working really well.
This was a standard 1/8th scale bell/flywheel/shoe. I wedged the engine in with it just to see the fitment to see how far I had to move the trans:
I know your rig isn't a revo, but odds are, fitment will still be an issue.