Well, Budweiser turned me on to a pump curve and I realized I requested 5400 R.P.M. as a target. This would put me in a bronze impeller. I thought it was aluminum or stainless only, I never heard of bronze. Here comes the question, It seems I am gonna come close to the 5400 target if not nail it. Should I just go ahead and buy the impeller and have it on before I run it ? It seems stupid not too.