That is like asking "can i ride a bike'.
It takes a bit more information to make this answer accurate.
I could 'shorthand', and answer with another question: "how long does it take you to pull the engine out and put it back, then add time for removing the flywheel and replacing the ring gear and putting the flywheel back on".
We would need at the very least a serial number, type of power-plant (Mazda? GM?) and if you are equipped and have experience to pull motors from a forklift. and then we would need to know the condition of the forklift. Some experienced folks may be able to do this inside an 8 hour day, but if the truck came out of a concrete plant, rendering plant or salt factory and had to have stuff chipped off all the nuts and bolts before they would turn, it may add considerable time to this job.