Big block 383 build!

Ok I will and yeah done got the steel shim gaskets with .020 thickness!Hopefully will not have to mill the heads but wanting between 9.5 to 10.1 comp!Whick water pump would you run,GMB standard or a hi volume?I have the rest of the pumps!Just got to get water pump,pistons and rings,balancer and Have the heads redone!Also if you dont mind the questions will the stock rear sump pan work with hi-volume oil pump?Do you have pics Mopar367