LS_ ? Can somebody help me pick a motor for my pro touring 70 nova

[LowchevyII]

Alright, so im trying to come up with a game plan for my 1970 nova that im bringing into the pro-touring realm. I know i want to go with an LS based engine but i dont know if i have the budget for it. I love the new LS3 with a hotcam making close to 500hp, but at 7000 dollars that might be a little steep, although a great deal for an LS and 500hp. I was thinking about going used and was curious if anyone out here knew where to find a good deal on a used ls1, ls2, etc and also what all i would need to get the motor ready to run (ex. harness, etc). Im also planning and running a t-56. So any suggestions with that would be great too.

THANKS GUYS

Jeff