I don't really know, actually! It has a conical internal structure, so I don't really think any maglev system would particularly fit it.
This might be a very anticlimactic, but keep it the way it is; maglev doesn't provide a major benefit to springs other than being much faster and heavier. The thunderclap v3 is already a very heavy cube, and the weight might just push it over the edge.
If you really want a maglev cube on the cheap, I'd get a Meilong M and a maglev conversion kit. It would cost less than the rs3m2020 maglev, and it would be light, which would compensate for the light weight of the meilong.
You could also get the rs3m2021 maglev too, which is an excellent option if you don't want to DIY! I'd probably recommend this, since for a few extra dollars you get adjustable compression as well, and similar performance to the thunderclap v3!