I have a brand new ARK Design Electronic Boost Controller. Really nice unit, small easy to use. I’d take 225 for it. I can get AEM and most Autometer boost gauges in a day. I have a Defi Blue Racer Boost gauge. Standard 52mm size. The plug got depinned and i lost the plug. Gauge worked great before i took it out of my gli. You could get a replacement plug from defi. If take $40 for that gauge.