Outer Limits 4x4 Board

I need to upgrade the headers on my N/A soon to be supercharged 6.5L Chev Diesel.
i was going to just make my own block huggers but i noticed that Gen IIIs (i think) have a similar cylinder layout and it has got me thinking i could just buy a set, chop the flanges off and weld mine on??

the measurements of the 6.5 Chev headers are 120mm centre of cyl. to centre of cyl. and all equal spacings ( see pic )

anyone have any measurements or pics of any thing close that can help me?

Anyone have measurements ?????

doesnt have to be aftermarket header measurements.
measureing stock exhaust will do

try a local wrekers see if you can measure them first or even take the old one and match them up.

I think your biggest problem could be where the all the pipes join up and exit.