For those running this setup I've got 2 quick questions:

1) Where exactly is it drawing 'cold' air from? I see two openings being the bottom and on the left hand side.

2) Replacement K&N filter size is?

 

I have the M2 Box and yes it draws air from the bottom

 

Yep. Draws from alongside the radiator.

As for the K&N #, search as its been posted here a bunch of times. I don't have the part number handy.

 

So would it be necessary to cut that lining that runs down the side of radiator in order to draw more air in?

 

depends on the radiator. I had to cut the lining on my mazda comp radiator.

 

some part numbers
RU-0820
RB-0720
RD-0720

 

Cheers guys

 

So basically 2 of the above are for the actual airbox itself and the last would be for the airpump?

 

no just some numbers i found that others used.

http://www.pettitracing.com/rx7/index_intake.htm

 

i suggest getting filters that are smaller in diameter because it's a tight fit in there.

i have the recommended filters and as you can see it's a squeeze, i had to put a dent in the lower filter to fit the top filter, and even still the top filter presses against the lid

 

I like the clear cover. Plexi?