Errr, no.
The Johnson would challenge an Eheim 1060, which is bigger than the 1250 (which is bigger than the 1048).
The spec flow rates, for comparison (including amperage@12 volt):
-7.1 gpm @ 3.3 feet (2.2 amps)
-5.3 gpm @ 6.6 feet (2.0 amps)
-3.0 gpm @ 9.8 feet (1.6 amps)
versus:
From pHaestus' pump roundup, here:
http://www.procooling.com/articles/h...haestus__1.php