THere are a few packages offerd by Trick Flow, Holley and Edelbrock....any of them make great power and come with almost everything to complete the job.
I think i may be changing it up sometime soon.
AFR 165's
GT-40 intake
FTI cam
You can find the kits at Summit, Anderson Ford has one, and all the other mustang parts places.
I recommend getting a kit as well. Mix and match parts sometimes don't make the best power. Most foxes see 280-300RWHP with HCI. For some reason though, my friends 95GT AODE with a 3,000 stall only made 239RWHP, with edelbrock heads cam intake, pulleis,shorties, H, and catback. That makes me wonder...should I do mine? hmmm.