The K&N was $70 and it has that end-breather deal, you can hook up
a hose to that and use it as Ram-Air too, like on the Lightning Truck
(aftermarket product from Johnny Lightning) That filter flows alot,
I can get a good idea on the depression tube, it seems to present
zero restriction @ 10" H2O test depression. Same flow as an open 3" tube.
It was on my 87 'Vert, seemed to make a difference but the old tired 4cyl.
was not enough to put it to the test
It will be for sale if Fishers Stang does not want it. $70 shipped,
all adapters and hookups. I'll post it in FS and I can make more
They would be dirt cheap if you buy your own K&N, but I have 2 more
that are different style, overall larger size filter, conical shape.
I can make it cut to fit for any year Mustang.