It all depends on what you want from your boat. If it is a healthy lake/river boat, stay with the Jacuzzi. If you are looking to race with the guys at the Power Tour you might want to replace it with a Berk/Dominator set up.The WJ is a good pump, but like all jets it needs to be checked/serviced every so oftin.
FWIW admittedly its "gutted" , 6 gal tank ,No interior and the jet has had work) , 6 gal tank) But my Miller 18' runs 80 (78.9) with a 434 cu BBC stroker and a Jacuzzi WJ Its not just the jet or the power or the Hull its about the entire set up Tom
If i get some free time tonight at work, ill play with it and post it for everyone to see.
Time to man up and yank it John! Ray