Mike I shared what I had in mind. My point is I don't think it will be all that complicated to install, a little internet research and I have found half the stuff I would need to make it work.[/b]
Yeah; I've found "half the stuff", too, Joe. I can use my existing cone filter, and 3-inch tubing between that and the SIR. The SIR can be had from two different sources. The missing piece is getting from the 3.0-inch diameter to the MAF sensor.

I measured the race car, finally; its MAF is 80mm. The 85mm number came from my street-going M3; I thought the MAF was the same on both cars, but the M3 has a larger intake tract. 5mm doesn't help much; 80mm is just over 3-1/8 inches, so I still don't think I can get 3-inch hose over the plastic part on the input end of the MAF.

To make it work right, I'd also need the reducer to include a 30-degree bend to follow the hood line and get the rest of the intake parts behind the headlight.