Mate the Pole Position is the go. But yeah, hard to get onto. I got mine through a google search and bought it from a place in Perth. As for guages, screw the expendsive ones. Again, got mine off ebay. Stepmotor ones and they look ok to me. I went for Oil temp, oil pressure and boost. Heres a quick vid of them starting up (If it attaches.)
They are a bit noisy in that they tick a bit when the radio is not on, but considering the price of tsome... Anyway mate, you get what you like, I'm just giving you an example and a look of the holder. Clips in, looks the goods.