info on a yamaha phazer and a ss 440

was wondering if the bottom engines on these sleds are the same , crank so on , ive a sks 89 phazer long track , bottom blew out , lord know what the hell the wife did to it , i guess what im aslking is are the motors the same and are compatible ,

and if not

what other motor could i drop into it that doesnt take to much modifing , any info would be great thanks all

or even if some one has a motor one piston shot or something as long as the crank is good and jugs

They are different and no parts are interchangable.