I was doing some research to order a = K&N filter online because here in Perú I´ve been waiting for about three months = until a local suplier imports them.......still waiting.
 
I am absolutely confused about round straight, = oval, round tapered air filters; what does it mean?  Which is suitable for my = ´84 1.9L carburated westy'
 
Advise please.
 
TIA
 
Chau,
 
Javier