help...4.2L to 4.6L to do

Hi everey boddy!!!
                             Firdt off all i'm a french canadian and i'm not to goog in english so please be patient with me!!!I have a ford F-150 and the head on it just blow up so.......i need to put another engine into it.I was thinking about a 4.6 litre engine (i hear than it was a good one) if you can give me information about the job that will be verry apreciated......once again sorry for my english!!!