Im trying to figure out if the circuit boards for the analogue tachometers are the same or not. I have the turbo gauge and non-turbo tachometer that came with the car since the previous owner bought those at johns subaru junkyard since the digi-dash was replaced because it shorted and cought on fire also frying some other wires in the harness. The turbo gauge is a direct fit once you take out the oil pressure gauge out and it even has the three holes already made factory for the turbo gauge to mount through the plastic part of the tachometer but the holes are not in the circuit board. I need to know if i can just drill the holes for it or if i can mount it in doing some custom work to get it to work if not i have a feeling im going to put the oil pressure guage back in and track down anymore wiring problems while i have the dash out. Any chance somebody can take a picture of the back of their analogue tachometer so i know what im up against? Any help is welcome and thanks in advance.