Brian:
What pump do you have, a p7100, a VE44 etc.
Can you send me your engine serial number and cpl and we'll find out if your unsure of what pump you have. .
If it is a p-pump, torq. plates are available for it, etc. .
If its a ve turn the fuel up a bit and get some hod rod injectors, you may have the hx40w? If you have the 16cm2 combo with this , you may not need turbine housing mods to build better low end boost.
I presume you are coupled with some sort of Allison auto trans. , ?
Good luck
Andy