I love my 360, plus a big block would be a lot more costly to put in, but if you've got the funds and time...honestly off I had the funds to do it, I'd put a new model hemi in it. I am pretty sure they are a small block but I'm far from an expert in the subject. Look of an old car and the reliability of a new one. A guy in town said you can buy an intake and caburate them and get rid of all the computer stuff that way. ( and have the carbureted sound)