Impeller for my B1

Hello everybody!!!
I am Yann from France!
I need your help to found the Best impeller for my B1.
My config:
B1 1996
R&D inlet, ocean pro plate, R&D pump cône 75Hub
62t/61x 700 engine with porting, 44 carb from WB2, Vf2, factory mod pipe, enhancer msd, coffman waterbox, stock cylinder head.
I do bouys in short track, i want a c75 impeller but don’t no which one.
Thanks for your answer
 
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