I own one of the first CTA intakes made. The hole depends on the year and if you have the IAT separate from the MAF (I don't)

BTW anybody want to know my power look at my sig please.

Hector 2003 Rally Red Mitsubishi Evolution VIII 257HP/259TQ 2005 Lapis Blue Mazda 6s RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED 160HP/141TQ