Hello, I'm new here so pleased to meet you all

I bought a Leopold FC660C from a member here, already modded with Novatouch stems, except the spacebar.
What can I do to make the 6u spacebar of this keyboard compatible with Cherry MX? I have some Novatouch stems ready, but I think I still need Cherry MX 6u Stabilizer right? Where can I get that stabilizer?
EDIT 1: Yeah I think I need 6u Cherry spacebar stablizer. Where can I get that?