Need more info for an informed answer. Speed, weight, intended use? That said, most pump parts/mods with a near stock motor (with the exception of a divertor) and a properly operating pump in good condition, will benefit nothing but the seller. At about 500+ HP, and 75+MPH you can see a small diference. I have done extensive testing at stock, 500, 750, and 1000 HP in lake boats for most mods you can think of, and my conclusion is that everything you can do will make a small difference in speed or holeshot, but NO ONE PART, other than Nitrous will make any significant difference in speed. Jet speed is a blend of about 25-30 seperate small interconnecting issues. Every time you change one part, you need to change everything else again to find out what the overall new combo wants. We build pumps, do setbacks, do bottom/fiberglass work, and unlike anybody else we know, have a COMPLETE engine machineshop and custom fabrication facilities. I like to think we are unbiased. The first mod other than a diverter, is to add horsepower. When a pump combo is right and more HP is added, it changes very much of the setup. No other single change will have as great an overall effect on the entire setup. For max speed, add as much horsepower as you can afford. More than you think. Either do the cam/intake/carb/exhaust deal and stop there, or if more cash is available, do a stroker shortblock with good heads, and add the external bolt ons as more cash is available(thats the preferred way). We rent nitrous kits for customers to get a real world idea of their goals. Most find that they need more HP than they expected, and can't get to their goals with just bolt-ons. Sorry about the long post, but this info is relevent to many peeps on here.  Let the discussion begin! TIMINATOR

I found this Dominator pump on a local add. I am wanting to switch my bowl on my 12 JF-A pump. somebody said the Dominator split bowl was far better than the Berkley, any input would be nice.

There are several variations of Dominator bowls depending on thier original intended application and vintage (example Dominator bowls for energizer kits which wont directly bolt up to Berk) Very Early Dom bowls need alot of work to make them work/flow  well/better or for that matter better than standard Bekeley , some late Dom bowls will not work to replace Berks without "adaptation" . One advantage to most all Dom castings including thier bowls and suctions is strength (wall and casting thickness) and in your case if this bowl would bolt up, you would gain the advantage of "bolt ons" such as droops etc. On your F (E) it wont be an issue but the OD of Dominator Bowls is larger so on a jet application using a transom adaptor , the ID of the transomn ring needs to be enlarged to allow the Dominator Bowl . Like we talked if your wanting a droop or straight snoot this (a split bowl) will be a must  Tom