well there is a M62A2 Jatonka because there are 3 verison of the M62 gasser, M62A1 mack,M62A2 multifuel and there are manuals on it don't know if the multifuel had a turbo or not you'll see more gasser and multifuel than the mack thou, these 3 where in the testing phase to figure out which motor would be best to the M62, not to sound like a jackass since i had old yella, I found more info on these trucks.