Here is what I am doing. I have a 1990 F250 4x4 with a 7.5l. I already have headers and true dual exhaust so I want to make it breathe better. My factory airbox is cracked and needs to be replaced. I have orderred the airfilter for a K&N cold air intake. Its costing me around $50.00. I used a K&N oil breather that replaces my factory oil cap by screwing into the oil cap hole. I plugged off the factory oil breather tube on the valvecover. Now I want to eliminate the plastic coupler that connects the hoses from the throttle body and the hoses from the airbox. The plastic coupler has a hose that connects to it from the plenum. The K&N filter has a nipple that I assume would have connected the oil breather. Here is my question; Am I correct in thinking I can eliminate that plastic spacer and run a hose from the plenum to the airfilter. I believe it will work that way but I would prefer some input on this. Thanks.

Rich