What is Army 91B called, and is it the same as "91 Bravo"?
Yes — they are the same job. 91B is the Army Wheeled Vehicle Mechanic MOS; "91 Bravo" is how the code is said aloud, spelling the trailing "B" with the NATO phonetic alphabet. Whether you search "91B" or "91 Bravo", the requirement on this page is the same: AFQT 31 and MM of at least 92.