Rev gauge

[powerandtorque]

Gti clocks could be used, just need to hook up all the sensors. Which is what I'm planning to do.
Rev counter will read to 8 instead of 6 on the gti clocks

I doubt that a standard GTi tacho will work, at least not without modification.

The GTi tacho needs to see the high voltage pulse off an ignition coil to work, and you won't have that from the induction pulse from the TD pickup. Even removing/bypassing the filter circuit like you do when you convert the tacho to work with later engine management or aftermarket ECU's I don't believe will work, evidenced by the fact that XUD's won't work with HDi clocks and vice-versa.

The circuit board on the TD tacho is quite different to the GTi tacho. I've got both at home somewhere.