If you have no motor at this time and are financially able to buy the motor of your choice. Go with the big block. I was always taught, if you are going to do something stupid go all the way. Ive got a big block in my little 80 mustang, its my first experience with a big block after 25 years experince with small blocks. I am sold on the amazing torque and pure power and will never go back to a small block again. Oh ya, welcome aboard.