Hello<br/>Can anyone tell me how good is the The Cummins, In-Line 6 Cylinder, 4 Cycle, 450 HP Turbo Diesel That Along With The 6 Speed Alison... Currently I have a 8.3 Cummins with Allison 6 speed. Possibly moving to a different coach. This inline 6 should be more power <br/>Are they high rev motors? I have never heard one run.<br/>Thank you for any info.<br/>Ricker