If anyone has an aftermarket filter install, it came with a MAF adaptor, so the flanged one is the one to get.

I have just a K&N, no metal adaptor for the stock MAF. No square looking plate. So I want to connect the rubber on the K&N to the pipe on the PRO-M, without the square MAF adaptor with 4 bolts in it.

This is why I have ordered the non-flanged MAF and confused everyone in the process.

Sold 1998 Contour LX 13.868 sec 1/4 mile time. Two years of rental cars, seriously. Holding out for 07 Cobra Mustang.