Well, you've got a lot of questions coming your way.
1) budget.
2) goals - how will you use the car, what do you want it to be
3) what, of anything, has been done already. There's extra costs to convert to fuel injection, or upgrade the trans, rear, and chassis to hold more power properly
4) rebuilt or new?
5) carb, fuel injection, turbo, supercharger, etc?
6) to a lesser extent location re:shipping or local pickup
Those are basics, and from there I'm sure we would have even more... but I think you're starting to get the picture