To be honest wayne they probably are because there not exspensive like a Defi or something but…
I have glowshifts in my car and I love them…
I did quite a bit of research on them before I got them as i noticed them on ebay at first but everything ive read about the gauges has been nothing but good, including people who have used the widebands.
No ones had a single issue with a gauge going out of wack or misreading from what ive read.
Ive even heard some stories about the boost gauges/oil pressure reading more acurately than a autometer