looking to buy used ls1

[GeorgeO924]

In the market for used ls1 engine for my upcoming Chevelle project. Want to know what is a good price for one with or without the manual tranny? Im in Detroit area i really don't want to pay 500 to ship one so i would like to get one i can pick up anyone know of a reputable spot?

My plans are to build a twin turbo, i have 20 people telling me all u have to do is pistons, rods, valves and u can make a ton of hp how true is this? Can i put 10k in the engine and get 800hp on 93 with or so 15psi without having to worry about blowing my hood off? Any advice is welcome im not a guru im a newb. This is gunna be my first engine build up from scratch.

BTW i read all the posts on here sorry if im beating a dead horse....