well as Chris said, the straighter the path the better. And because the Ram air kits for mustangs have a decent amount of tubing to go through, it seems that a cold air kit would be a better choice.
I have the march ram air kit (it was a gift, thats why
) and its more hassel than its worth. I always scrape the scoop on steep sudden inclines and speed bumps, almost ripping it off. Also, the air box is freakin huge!.
I will be getting a anderson N/A powerpipe soon and won't be able to use the ram air anymore. I have it in the classifieds for $85 + shipping, (its $150 or more, new). shoot me an email if you're interested
my email