drilling firewall?
 

I am installing an oil pressure gauge and water temp gauge where can i drill to get them through to the engine compartment?? http://www.mustangworks.com/msgboard/confused.gif
nothing on passenger side, only can see through on drivers side. I'm putting them in the center ac vents.

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93-LX: 5 Speed, Flow's with H-Pipe, 3.73's, C&L 76MM Kit, Sub's and K&N.
14.85 @95.83

If I remeber correctly I just used a long screw driver I pushed it through the gorment(sp?). I think it was the clutch cable or speedo. I have three wires running throught mine and no drilling works great.

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Check my site for mod
www.fordmustanggt.com

I am using mechanical gauges, need a big hole for the temp gauge fitting.

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93-LX: 5 Speed, Flow's with H-Pipe, 3.73's, C&L 76MM Kit, Sub's and K&N.
14.85 @95.83

pop the grommet out and carefully put a slice in it with a razor. then you can push the water fitting through.