You need a
K&N 66-3040 unit. I've used this on several of my FE powered Cobra replicas (2-ERA's, 1 Contemporary, 1 Unique). If the air filter clearance is still a bit too close for your comfort, you can replace the 14X3" air filter with a 14X2.5" to 14X2.75" filter (there are four or five height incremental K&N filters available).
At $131.00 (free shipping with Amazon Prime
) no need to recreate the wheel for a less than $20 cost savings, sorry.
Now, with that said, before you spend any money, you need to see exactly what CFM worth of filter assembly you need to properly feed your engine.
Using the simple formula
A= effective filter area
CID=engine displacement
RPM=maximum RPM expected
Using the CFM formula of height X diameter x 6 x 3.14
Also keep in mind that the 14" extreme top flows 500cfm by itself.
Hope you find this helpful.
Sincerely,
Bill S.