What is the wheelbase difference between the John Deere 9RX 710 SCRAPER and 9RX 770?

The John Deere 9RX 710 SCRAPER has a wheelbase of 182.4 in. and the John Deere 9RX 770 has a wheelbase of 181.9 in., a difference of 0.5 in. The John Deere 9RX 710 SCRAPER has the higher wheelbase.