You didn't say what TZT unit you have (TZT9, TZT14, or TZTBB)
If you don't want a touch monitor, you could go with the Furuno MU150HD or MU170HD. If you have TZT14s, you can you could go with a touch monitor and turn on the external touch setting to run a touch monitor like the MU170T or MU190T. It is possible to run off the shelf products but you must ensure they will support the published resolution of the unit.