Maven A1 ULT, SLV, and BRZ can all be retrofitted with the new tuning kits. Maven Base cannot be retrofitted.
Maven ULT and SLV Tuning Kits are interchangeable, but due to lever-body differences, BRZ has its own kit compatible only with the BRZ model.
Tuning Kit part numbers:
ULT - 00.5018.278.000
SLV - 00.5018.278.001
BRZ - 00.5018.278.002