HiPoTek is now offering fuel pump modules that have been modified with the Walbro 255 LPH, 400 LPH, and 450 LPH fuel pumps for the Dakota 96-04, Durango 98-03, and Ram 94-03 vehicles:
http://stores.hi-potek.com/fuel-pump-module-walbro/
The 255 LPH modules are available for the stock OEM fuel system as well as a custom feed/return system. The 255 LPH module for use with the stock OEM fuel system is basically a plug-&-play set-up.
The 400 LPH and 450 LPH modules are available for custom feed/return fuel systems only. This requires the customer to plumb the remainder of their custom fuel system with separate fuel lines, pressure regulator, fuel rails, etc.
For example, this is a new module set up with the Walbro 255 LPH pump installed using the stock regulator, fuel lines, etc. (This new module also includes the module tank seal even though it isn't in the pic.)
This is the used module modified with a Walbro 255 LPH, 400 LPH, and 450 LPH pumps.