Impeller for build

Just picked up a kdx with a 148 mag pump. For now I'm just going to put my jetmaniac 735 w/b-pipe in there. What impeller should I use. I read somewhere someone used a 6/12??
 

Just4Fun

First World Problems...
Location
Southern Oregon
I ran a 6/14 in my SV1 when I had my 735 in it with a lay down pipe.
6/12 will work good you're prob gonna wanna open up the reduction nozzle for the most bottom end assuming that's what you're after..
 
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