which oil pump to use

[ws6_nightcat]

i'll make this as short as i can. i'm building a 402 ls6. it's got a lunati bottom end, c5r top end. and a whole list of other things. it's going to be a heavy nos engine. i'm using the crane double roller timing chain assembly. is the stock ls6 oil pump sufficient or do i need a ported one, like slp's. does it really matter if the pump is blueprinted. i know the ls1 pumps were junk for the most part.
thanks everyone

[Ed Blown Vert]

Why not go with the LS2 pump? I run one.