Will Big Block be TOO MUCH?

[benbloom]

Hey all, i am currently looking at a truck with a BIG BLOCK 454 and a TH400 to back it. The truck looks to be a good deal and is all around what im looking for, BUT im going to be using to for daily driving, and i wonder if that setup is going to be too much. So, for guys that have had big blocks, how is the cab drone and overall noise when your driving around? It always drove me crazy in a DD after a week of fun, when your sitting in traffic and you cant hear yourself think. could i make it decently quiet with the right muffler? (SORRY) Are the vibrations going to be much worse? and as far as fuel, is it going to be much worse than a 350/ th350 setup?
please let me know your opinions, seems like i might have to act fast on this one.
Thanks!