Help me out on injector size

[Diezeldriver]

96 12V, Stock 180 P pump with AFC mods and 4K GSK, 66/74 Turbo 4" exhaust to a 6" stack, Trucks primary purpose will be bracket racing with occasional street use. There's a set of 5X.025's in the classifieds, would these be to much fuel or to big for the pump? How about just tips on the stock nozzles?
I know this is going to get out of hand but trying to stick to a budget right now.
This will be my son's truck when he gets home for his overseas military assignment.

 

[OrangeNV]

5x.016, or .018's at most, you can get more fuel with dv's as well

.025 is retard huge

 

[Cummins Driver]

I think 5x.016's and some good delivery valves will be plenty.

Eric