You really can't use the stock MAF, because on the bullet style Pro-M you slide the filter on there are no flanges and bolts its just a tube and because of that you can slide the filter farther up the tube freeing up that extra 1/2-1" you need to fit that large mouth S&B. Check my post "It lives again" there is a link with pictures of my set-up which is the same as Ricks.
