The mounting plate for the stand is adjustable. You will be able to fit just about any engine block. Make sure you always use Grade 8 bolts. There will be hundreds of pounds resting on these bolts and you don't want to risk damaging the motor because of cheap parts. And always make sure you put the locking pin in place when your not rotating the motor. Adding and removing parts can shift weight and you don't want your cylinder heads falling on your foot.
Four legged rolling engine stand for easy movability of your block while rebuilding. 
A good engine stand should have four legs with quality steel castors. Don't cheat yourself and go with a three legged stand. Chances are it will tip and you could ruin your motor or hurt yourself.