What impeller pitch is stock for RTR Krash50cal

I bought a krash 50kal hull which had the pump included.....dropped in my DASA900 bpioe, etc, and it feels way over-propped......engine can’t pull into the upper range except on flat sections.....looking for instant hit and rev-ability for surf riding, hard turns, white water mounting, etc.....any advice on best impeller to go for much appreciated......tks
 
I will need to double the order details on my JM invoices to give you exact answers guys.....not touching my Freak.its ..still the best hull and motor I ever owned tks to Tem and McDog....give me a day or so please.....trying to dial in the 50cal so it feels more like my Freak.....grinded the rubber knobs off my brand new ODI grips to make them thinner,, cutting my new carbon pole 3 inches, might still have to go OVP ...need to make replica foothold setup as well........so why not just keep riding the Freak you might ask..........well 2 rides is better than one
 
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