Cummins swap

[GMCummins87]

Okay been working on a Cummins swap for a while know also 4wd conversion so far I have a 91 Cummins with getrag and auto np205 t case dana 60 and 70 dodge axles for truck I have an 87 2500 2wd bought a 78 k30 frame with springs getting ready to put the axles under the frame I know the perches are narrower then the gm ones questions I have are:
Do I have to modify the dodge perches on the axles and any other differences?

Trans cross members what have other members done?

And fuel tanks can I use a gas tank and make my own pick up tubes and sending unit?

Here are some pics of the build

 

[mr heavy-chevy]

wholey **** thats gorgeous....

ive been thinking of doing this swap myself. if i was going to do it, i would get this kind of fuel tank....

http://www.northerntool.com/shop/to...tent=3490109&gclid=CJTZu7P52s8CFYNpfgodqlQJxg

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51 gallon in-bed tool box tank.

im trying to crunch the numbers though...... and unless this motor is going to get 25MPG as a minimum.... i think im gonna sell my truck =(

 

[74 Shortbed]

Very nice..

 

[cat-black]

I did a 74 2wd swap, and used the old gas line as a return, and ran a new 3/8 gates fuel hose, to a homemade "sump". the sump is so easy, and helps get un-aireated fuel to your cummins
it's good practice to return your fuel under the fluid level to reduce air.....