swapped out my gauges prosport in the car today. Installed new Depo gauges. I found when comparing them side by side a few things jump out. 1) they use the same sending units for water temp, and oil pressure. The boost sending unit was slightly different 2) the gauges are way different and all sending units connect to the gauge via plug in harness on the depo gauges. 3) the depo gauges have a aluminum body and self calibrate on start up. In summary prosport are cheap copies of the depo gauges which are copies of Defi. Also the opening sequence is petty cool.
side by side pics. prosport left and depo right
back of gauges
front of gauges
Boost gauge lit up. It has a lcd read out