77 Chevy engine swap question

[4uhataz]

I'm new to the boards...in fact this is my first post. I'm in a bit of a dillema right now choosing which engine to put into my truck. I don't want to get flamed or anything for what I'm about to ask, so if it offends you I'm sorry. I have choices between a 350 4 bolt main, 383 Chrysler big block, or a 440 chrysler big block. The real question is have any of you performed this type of engine swap(chevy to mopar) and if so how did you do it. Was there any difficulty in doing it? I'm leaing more towards the 440 but I just want to know how difficult it is and what is involved in placing a mopar engine into a chevy truck bay. Thanks!