What intake manifold are you using? And are you running a round throttle body or an oval? If its an oval- than all you need is an 03-04 cobra intake tube. This is what I ran for a brief period before deciding to make my own tube.
If you are using a round throttle body with a 3 1/2 inlet, you could still make your own tube and put the 4" to 3 1/2" reducer right at the throttle body. This would allow the air to flow straight through the MAF for 8-ish inches before being necked down at the motor.
1995 T-Bird. PI 4.6. Bullitt intake. Big MHS cams. 4,200 Dirty Dogg converter. Kooks headers. Full exhaust. 4" Drive Shaft. 4:10s.
Waiting on a tune.
1997 Lincoln Mark VIII FX2 Sand Dune Machine.
1997 Lincoln Mark VIII LSC- stock