No oil restrictors in the block and getting good oil flow on top of the block.....the pump i have is only a 5/8 inlet and only writing on it has the number 5282 on it....i phoned moroso as it is there pan and he told me with that pan and my high rpm's i should be usuing a 3/4 inlet pump.....as far as anti cavation pumps nobody has one around here and it would take 3 weeks to get.....i want to be racing before then