A 383 is a stroked 350. But it doesn't matter...the blocks are the same. You have to buy or fabricate motor and transmission mounting since the old 6 cylinder and transmission mount differently. The original motor has a mount on the front of the motor and one on each side of the bell housing. The motor you are swapping in has side mounts on the motor and one mount on the rear of the transmission . So you need two crossmembers on your list.
