These guys also did a review of a NB with a built engine on ITBs but to be honest, it seems like that was way more work than just sourcing a honda unit and throwing it in.
Dyno Torque just finished a 2.5 Duratec swap on ITBs into an NC, I assume there will be a DW video coming up on it soon as it was their track car to replace the R53 Cooper S.
Interesting. Since seeing this I like the idea of a NB or NC MX with a k20
https://www.youtube.com/watch?v=Qc_3fEcouec
These guys also did a review of a NB with a built engine on ITBs but to be honest, it seems like that was way more work than just sourcing a honda unit and throwing it in.