The GT40 is a waste of money(unless your after looks) and flows almost identical numbers as the cobra. Buy the cobra. Extrude honing is expensive, as previously mentioned($500), and not worth that much money. Why not get a trick flow if looking for a new intake? Out flows cobra, and is same price. And you dont have to remove the front end to change the cam. Only the radiator, and the A/C condenser, which can be relocated without disconnecting it, causing freon drainage.
------------------
1993 GT/AOD
'93 Mustang GT