The motor is modified like this, I know that the oilpump is modified to give this pressure. And they rew this motor 7400 rpm when it was raced in the 80s. But I dont want to risk anything now, ......so there isnt any problem with the pump or oilfilter

but is it safe to run a cbb with this oil pressure?
But What oil should I run 40 or 50 ?
Thanks