From my admittedly limited research on this, you may be able to get away with only removing a very small area of the coating in order to drill through and weld a bung in place. I was reading about it when I thought that I might have to do that for my BP kit, but discovered that blessedly, it comes with piping already tapped and with a bung in place.
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2014 370z Touring Sport Magma Red MT // BP Single Turbo 6467 // 63mm TB's // Z1 Ported Upper Mani // RJM Pedal // Zspeed Stage 3 Clutch // 526 WHP, 451 WTQ
2006 350z (Sold) // 1990 300zx (Sold) // 1985 300zx 2+2 (Sold)
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