Do it properly.
Superdave,
First off this is a great bunch of people to get opinions from.
There is a proper order to upgrading your Cummins/Dodge. It was written by Ted Jannetty and here it is:
1) Guages, boost Pyrometer, optional transmission temp, or fuel pressure.
2) K&N air filter in the stock air box or a JRE Cold air Kit with Heat sheild.
3) 4" exhaust turbo to tail pipe, preferably mandrel bent aluminized.
4) Then some sort of fuel enhancements, i. e. Van AAken CPC or larger injectors, but not both at the same time until upgrades to the torque converter and valve body on Auto's, or a clutch on a manual
5) High quality low stall converter, preferably 1600 rpm, and a valve body modifications to recalibrate to handle the extra power.
I prefer the Star performance clutch on the manuals.
6) Depending on what you choose on #4 finish the job with injectors or Box.
7) 1/2 inch fuel system to feed that hungry powerhouse, and keep that injection pump cool and lubricated.
8) 7psi 100 gal. hr. pusher pump at tank.
9) 15 psi 100 gal. hr. lift pump on engine.
10) US Gear 20% Overdrive auxillary transmission so you can use all that new found power.
How's 1800 rpms at 75 mph sound?
11) A BD turbo mount exhaust brake to slow her down.
I would strongly recommend that you follow this order.
By the way, remember that all people are entitled to their opinions.
p. s. Fill in your signature with your truck specifications. It helps out a lot.
Paul