Precision converter pumps
thats the way they will come if you dont ask
When I purchased my FLP IV trans, I called VIG direct and spoke to a tech about this same question. Their answer was that the VIG3600 comes with a #6 pump, they can (upon request) put the #7 pump in. When I had all my specs all stright, I then called FLP and told Chuck to sell me a #7 PUMP vig3600. I belive the #7 pump stalls a little higher (4000 I think) Those were the fact that were given to me. Please don't think that im trying to argue with you. 
I've lost a few races to stock LS1s because I was just spinning and not moving anywhere


