STRI gauges?

[Stash]

Anyone have any experience with these? I found them as I was searching for 3 bar boost gauges. Look like nice gauges at a decent price, kind of in between Prosports and Greddy, Defi, ect. I also found them in psi/F as well as bar/C.

American: http://www.optionimports.com/strigauges.html

Metric: http://www.vividracing.com/catalog/gauges-stri-racing-c-4339_4340_5518.html