not sure what year block or anything yet. i am looking to see if i can buy a crate 455 engine from a perfromance shop or what not. what would be the best thing to do? buying a 455 block taking it in and having them build it up orbuying 1 already built up? i am 18 years old and i am new at this. i am going to need a lot of help and here i think i can get it here. any help would be great.