CURTS04: you are right, you didn't read the whole thing. Would you have understood what the man did if you had?
If you can't buy what you want for a CAI, I guess you will need to buy a newer truck.
I have an 86 B2 that now has a 4.0 OHV in it, you can't buy a factory made CAI for it, but it has one, home built, looks like $hit, but is functional. Total cost, less the cone filter, about $35 (priced the parts 6 months ago at Lowes). I built the one for my B2 in the early 90's, ran it for over 100000 miles, no problem. Before you complain about it not being a 4 cylinder, who cares, they all do the same thing.
My best suggestion to everyone who wants a CAI, and can't buy a factory built, disregard the naysayers who are telling you they don't do this or that, they don't know, because they haven't installed one and are relying on what others have told them, they do help, maybe not a lot, but make up your own mind. The cost of building your own is negligible, think for yourselves and build something that is functional. You can get all the parts from an auto parts or hardware store. Think about where to install it to keep it away from as much heat as possible, it doesn't have to be installed where your OEM is, you are building it
, put it where you think it will do the most good. I.E., the opposite side of the engine compartment, down low, run a large hose to it, what ever it takes, use your imagination. That is what the design engineers did when they drew up the first one.
Second suggestion, if you construct a CAI of your own, bigger is better, build it as large as you can get away with, it makes no difference whether the engine won't draw all the air in that is available, but remember that the more volume that is moved threw the intake, the cooler the charge of air will be at most times.
Look at the picture, the 3"x4"x4" down spout adapter mounts to the radiator support behind a hole, the 4" duct hose runs along the top of the frame rail, the Spee-D-Basin mounts to the inner fender well, the black tube is stock part from the engine, I will change that to a smooth hose or metal tube when I find one.
Now all those who don't like what I say or how I say it, complain away.
This thread has been running for 2+ months, I have posted to it, read almost all other posts, and no one seems to want to help with ideas on how to construct your own, just whether it is a waste of time, money , doesn't do any good, yada, yada, yada.
To those who are in the later category, go post where you may do some good.
Be part of the solution, not part of the problem. 4 cylinders need what ever help they can get, whether it be 1 or 2 HP makes no difference, it come down to product availability for most of these guys with older truck. If you have a newer one, good, go buy a kit for it, if you have an older truck, build your own, that is about the only way you are going to get what you desire.