Many people don't bother changing the interior, or certainly the dashboard, on these when building them.
I can now see why! What a PITA it is. There is zero room for all the wiring to fit behind and altering the electrics to suit the new gauges is a complete nightmare. Then you have the new heater controls (flexible wires); like trying to wrestle an angry snake in a shoebox.
But it's done and all working! I now have to dismantle the whole lot to finish the dashboard, before doing it all again.
I have probably mentioned this many times on this thread...but for anybody thinking about building a car.........JUST DON'T!

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All good things come to those who wait. I'm really impatient which explains a lot.
2024 Audi A4 avant 40 black edition petrol
2025 Ford Focus ST 'track pack'. Go-kart with sat nav.
Z3 'free litre'. Project and a half.
No Z4 anymore!