You are opening a can of worms! There is no BEST kit. They all have their pluses and minuses. A lot depends on what you want to do with it.....road race, drag race, cruise etc. Do you want a big or small block engine? The list goes on and on. The list you gave has no bad ones on it in my opinion. If you want a roller you might also consider SPF or Backdraft Racing. What is your budget?
By the way, whatever you think your budget is add 15 to 20k to it! There, all your questions are answered!
Have fun,
Larry
