A 471 will fit in the engine compartment of a 600 but they are so underpowered that not much would be gained unless you just like to listen to the noise of a Detroit. I blew the doors off of 671 Detroits with my old 550 that had the 370 gas engine. A 471 with 143 HP with the big injectors would have been a moving road block compared to the 370 gas that had about 100 more HP.