John Deere 760 /5020

Hi all, first time I've posted, I have a question about a 760 scraper that had a motor put in it out of a 5010, but I think the motor came out of a 5020,is there an block mark/id somewhere to try and work something out, only thing I can work out is the 5010 has 7 Less litres of oil? and 3 intakes compared to the 5020's six, any info would be great cheers

John Deere 760 /5020