Apparently according to the knowledge I gleaned from the guys who reco'ed my head ( they do most of the work for the QLD z club ) the injector holes can muck up the flow a little.They counseled welding them up but I decided against it as EFI and turbo is in the future for my car.
N42 Stock setup +triple dellortos on a redline manifold. I have the same style of gasket as you have ( though newer by the looks of it )
PS. Been watching your car on jdmstyletuning. Lovely machine.