everything comes with with the gauges, except for the oil temp. there you need an adapter. but it depends where you want to connect it. normally it goes below the oil filter. mine goes to the oil sump drain. the third oportunity is via the "measure stick". :duh:
the HUD is by IN.PRO. they got two versions. i like the older one more than the one i got now. at the other one you got in addition a line of red leds. you can switch between speed and rpm. this one now comes with a low and high speed warning that you can program. and it got a photo cell to adjust brightness. today i would prefer the defi HUD. i saw a video in the net. it can show more than just speed and rpm...and looks quite more interesting.
and...my car is supercharged. but the boost indication is very present. in idle it shows about -0,5. under full throttle it goes up to about 0,35.