Hey, whats the cubic inch of the 4.6 engine? The 98' brochure says 280 and most people on the net say 281? I want a decal to flash off the large cubic inch i have on my car

Well, I want to put a small decal that says the cubic inch of the engine right by the hood "scoops" . Thanks for any info!
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1998 Mustang GT with a 4.6 liter V8, Black