okay... i need a quick answer!

i found a good deal on a local 01 4v intake. deal probably wont last very long... i am beginning to build a 4v 5.4. if the deck hieght on the 5.4 id taller, wouldn't that spread the heads apart a little? i want to know if i am going to need a special custom intake or will a factory cobra intake work in my situation? i plan on using "C" heads so.... fast as possible guys i need to scoop this up tomorrow if it will do...