cpt, I used 3" PVC pipe (drain,waste...) What I did was extremely
easy. Two 45's, less than 12" straight, one rubber 3" to 2.5" connector with the hose clamps already on the ends recessed slightly in grooves. All I did was measure the length between the 45's, dry fit it, find the right angles for the tube to fit into the open fender hole that the stock setup left. The rubber connector could not have fit/worked better, beautiful setup, attatched right to the plastic nozzle piece facing the front of the car.
Stock airbox used still, did not even move it, just took the silencer, and the rest of the plumbing off. Now, I used two 45's that are elbows with one side female and one side male so to speak, in the biz they are called street ells. The male side went into the hole in the fender, coupled with the straight pipe glued right into it, then straight pipe glued right into the other 45's female side, then rubber connector onto the male side of the 45, right onto the black plastic snorkel piece on the air box.
Literally that simple, and I shoud get a pick of it. I painted it black and it did make a difference. The non-mechanical wife can even tell
. MY03 Baja (Legacy) 2.5 liter. It looks better than anything on the market for stealthness being black, and it fits perfect. I suggest everyone to do it. Cost me $17 in materials including the cleaner/glue. Brian