I have a 98 civic with a typeR swap and I want to use a factory air box with a aluminum pipe so which airbox do use that will bolt to the factory location. I would think a Gsr, Si, or type R.

 

this is a bit confusing to picture, if you want an air box than will bolt like factory then you get the air box that came with your car, and not from a gsr integra, and theres most likely no difference between the type r, si, or normal ex air box

and you might as well keep the stock air pipe, if you want an aluminum one, just get an aftermarket filter as well

 

'99 - '00 Si airbox and intake arm will be a perfect fit.