P-Pump Cummins question

OK, truck is a 1998 F800 with a 5.9 12 valve and Fuller 6-speed. The truck was spec'd at 210 hp. I think that's 420 tq or so. The trans/clutch are good to 660 tq.

If I put in the 3k gsk and replace the fuel plate, what fuel plate would bring it up close to 650 tq, and about how many hp would that be? I'm guessing I'll probably have to think about another turbo as well, but not sure about that.

 

Thanks for the graphics there. Pyrometer is definitely on the menu, and it doesn't pull heavy at all. I bought the truck in the CA IE with the intention of flipping it up in the Midwest, but it is too sweet of a tow rig that I am probably going to keep it and make it the way I want. 20' flatbed will be extended with a 4-5' beaver tail, and a large slide-in camper for a pickup will be mounted up front. My Land Cruiser will ride on the rear of the deck/beaver, so I would estimate about 4k for the camper max and 7k for the Cruiser... 12k on the back, with a 26k GVWR at about 23-24k overall (I really need to get it on a scale to see its true tare weight, but I am guessing about 11-12k there).

The GSK is about ability to hold 65-70. Right now it will hold 68 mph all day when unloaded, but put my empty car trailer behind, and that drops to 66. Throw a vehicle on it, and 64 becomes the max cruising speed due to the fuel cut winding down as it approaches 2500. I don't need a speed racer, but something that can climb a grade at a reasonable speed and run 65-70 on the flat lands would be nice.

One more question: Being only 210 factory hp, should I also be looking at bigger injectors? How much will those stock injectors support?

 

I will be the only one driving it.

 

Funny thing, I looked up "1998 F800 specs" online to see if I could narrow down the torque number, and I found the truck I bought listed online at a dealer. I bought it last year from the guy who I assume bought it at this dealer and he fixed it up real nice in the whopping 3k miles he drove it, removed all the old company markings, and cleaned it up pretty decently
1998 Ford F800 -.