360 pros & cons vs 318

I had a chance to get a 413 wedge for 500 bucks. Everybody told me no though??? That it would be too hard to install.... It needed the intake dist and exhaust manifolds Or headers.. yea too bad im far lol.. found a few motors so im pricing everything out. I also found a 69' 440 for 500 bucks so at the moment im still planning. Do i have to go with manual steering since my car has ps, or will the big block work with my ps pump? Im just asking as most know and have done it before me i know the 360 is a bolt in deal nothing too much. What would be cooler, 413 or 360 lol? The little 5.0's get put to shame when they rev there little "crap point oh" engines and try to race me. Already proved to two of em, and an ex-chp mustang he couldnt touch me lol im just looking for the best bang for the buck. Im already set on swapping motors, just dont know if i should go straight for the big block now. Thanks guys, for all the help!!