I posted this over at the ST org site but figured I would also put it here.. I think this is the best bang for your buck on a ST intake while keeping it as close to OEM Ford as possible.
Air intakes
Everything you need:
RS OEM upper intake tube (Tasca) Part Number: G1FZ-9C623-A $69.50
RS OEM lower intake tube (Tasca) Part Number: G1FZ-9C623-B $51.03
Silicone 3" to 2.5" coupler/reducer 3" length* ~$6 Ebay
45 Degree Racing Silicone Hose from Ebay (intake side - optional)** $10.95
* Or use 2.65" length piece of scrap 2.5" OD tube (muffler shop, etc)
** Or Mountune high flow induction hose $69 or reuse the OEM stock accordion style elbow
Air intakes
Everything you need:
RS OEM upper intake tube (Tasca) Part Number: G1FZ-9C623-A $69.50
RS OEM lower intake tube (Tasca) Part Number: G1FZ-9C623-B $51.03
Silicone 3" to 2.5" coupler/reducer 3" length* ~$6 Ebay
45 Degree Racing Silicone Hose from Ebay (intake side - optional)** $10.95
* Or use 2.65" length piece of scrap 2.5" OD tube (muffler shop, etc)
** Or Mountune high flow induction hose $69 or reuse the OEM stock accordion style elbow