R34 Gauge Upgrade Help

[34sharker]

Hey guys,

So im currently doing quite a bit of work to my 34 gt-t and had a couple of questions about the stock gauges and upgrading them as i heard they werent 100% accurate and the standard 1bar boost gauge is useless to me as ill be running 18+ psi soon...

Firstly how big are the gauge faces as im hoping to just put the new gauges into the original cluster, secondly will the wiring match up from the old gauges to the new ones or will i have to replace it and remove the old wires/sensor etc and lastly has anyone put in an after market door pillar cluster if so how hard is the wiring job for that as i really dont want to be drilling holes through the firewall...im probably asking really stupid and obvious questions its just i havent been able to look over anything as my cars off the road with no battery so im not fussed at looking at it just yet until its running plus would rather hear some answers from experience because i want to do it right the first time as i cant stand dodgy jobs or having to guess.

Cheers. Brock