Should I go Big block or Small block?

i have not read all the answer but i wonder about the tq or hp is best in a a-body..?
I mean stroke 360 to be a 408 or bigblock 440cui, are a problem with smoking tires and bad track/strip/street time, have you modified the rear end to handle all that torque ?? In my strip/street duster i go for very hot 360 with 500+hp at 7000rpm and no drive under 3000rpm because i want to get good track time.