six string Tunomatic bridge with RMC piezos

Hey Tremblap, A 6 string tunomatic-style bridge does exist. There's one on my Alembic fretless 6 string! Not Peizo though. That is Cool!

Judging from mine, yours needs a bit of modification. Yours has the shape of a guitar tunomatic. A bass one needs to be deeper. Even if you mount it at an angle to deal with some of the intonation differences, bass strings have way more variation of intonation positions from brand to brand or gauge to gauge than guitars. I'd make it twice as deep as it currently is. (twice the adjustment range).

Quite frankly I've never quite made up my mind if I really like my Alembic bridge system or not. But it's by far better than the usual wooden non-adjustable ones that come on most acoustic basses.