Hmmm. Do I want gauges that look OE, or do I want gauges that look good although not OE, but work. i.e. Smiths vs Auto Meter.
Back in my MG/TR/Healy days, I don't recall Smiths being that bad. Lucas electricals were another story. But, alas, did finally allow pragmatic tendencies to influence gauge (and other electrical components) selection. Went with Auto Meter Sport-Comp 160MPH electronic speedo, and 8000 RPM tach, and "Z" Series
oil, water, fuel, & volts. They look good, work perfectly, and AM backs them up. Speedo went back for condensation removal, tach went back for bulb change, both at no charge.
If Smiths, check suppliers in England. I get most OE parts (at OE, not "Classic Car" prices) from europaspares.com in UK.