Looks like a 2 stage pump!
What's the H.P.?Hopefully 5 or more.
What's the r.p.m.?1850 is better than 3600.
Looks like a replacement motor.
I'd beware of the tank---Put it behind a barrier or something for missile protection!
I think it's a very good price,compared to what I paid for a new I/R unit a couple years ago!
Mike.