Engines for a SJ410?

Anyone know what can fit in them and better yet where I can get used ones?
Thanks in advance

not sure what anyone else has told you, just found this site and new to it. i've seen jeep v-6 in one, heard of vw rabbit diesel's, mazda rotary's going in, just about anything will go if it ill fit, you may have to alter mounts and hood tho. for a original motor, try hawk suzuki in oregon and i have seen one on ebay, good luck