My buddy has a Donzi 38ZX. Wants new dash inserts made, new gauges and switches installed in it and re used or new wiring. He doesnt want to do it himself. He can disconnect the big plugs under the dash easilly. He'd like to unplug the big plugs, remove the inserts/gauges/wiring, send it somewhere, get it all back brand new and just plug it back in. Does anywhere offer that service?

Try Waves and Wheels, the have the electrical experience and the staff. I have done it, but I did similar work for years. It is not hard, just tedious. I replaced my dash and gauges. Likely will have to add some wire extensions and maybe and sensors. Took me a couple nights after work.

Does he want new panels made or just all the stuff replaced in the existing panels?

If he wants new panels Innotech is great but Steve is pretty busy. There are a few places at can replace existing. We’re is he located ?

he wants new panels

Outside of Toronto

I forget is a ZX flat panels or curved? Curved will be a lot more work.

Have him check with newwire https://newwiremarine.com/
not sure if they will build them with gauges pre-wired. They just did three replacement panels for our 400ss.

I'm not sure how it would even be possible to do it in the way he wants.

I had good luck with Newwiremarine
Totally custom builds carbon fiber ,colored, switches complete wired!

like mentioned above.

Its so easy a caveman can do it!