Gary, from the photos.
nothing is on straight
the motor bracket welding looks gobby
needs a filter regulator
850W electrical is 1HP
1HP will deliver about 2cuft/min FAD most deliver 100psi
It will blow up tires and blow chips off your lathe bed and deposit them out of sight behind your apron. It might not be able to keep up with the blow gun for very long.
I would replace like for like, that way you won't be disappointed