I have been doing some research on these heads for my future purchase. They are not even close to the edelbrock heads,but they are half the price too. Also you will need (p)headers. The only problem I have found with this is there are only two companys the make them and they are both shorty's.The explorer manifold is good for the money. You will have to move the ACT sensor to the inlet tube(no big deal). I wish I would have know about it before I purchase my cobra. If you buy a combo(heads and intake)you can should be able to find a good deal.
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Check my site for mod
www.fordmustanggt.com