Possible LS swap?

[wwillmon]

So right now i have my 73 c10 down to the frame and can really go either direction with the motor and tranny. Right now i have a 350 sbc that i was planning on rebuilding (aluminum heads, cam, etc.), so i dont neccessarily need an ls but i would love to have one. After reading around though it seems like the ls swaps are the way to go as far as reliability and mps etc.

My problem is im not sure with which ls motor i would want to go with. I would want to be in the ballpark of about 450-500 hp, with room to increase so im guessing i would want one with an aluminum block? My other thing is i like the looks of the old sbc and bbc motors with hardly any wires under the hood, and with the ls i know im going to have plenty of wires t run, so is it possible to clean these up and make them look show quality in our trucks (paint, wiring, etc.) This truck will just be to cruise around in and put in shows, but i want to do it right the first time and not regret my choices, so any help would be appreciated.