‘74 C-30 Dually Front Suspension Questions

[bigtexasrob]

Hi all, first post to the site, came to the forums because I can’t find answers to the questions I have. Guess that’s what I get for “needing” a dually. Anyways, let’s jump into it. Truck in question is a ‘74 C-30 dually longbed that originally had the 350 and a “four” speed.

1) What differences are there between the C-30 and C-10 front suspension member? How different are the control arms?

2) Do I need to shorten/modify the front suspension member to lay the truck flat on rails, or will control arms and drop spindles handle it? It seems that the front member sticks down too far to set the truck flat.

3) Any resources for or members here that fabricate custom control arms? I’m looking for something a little different.