Drag Link info needed

[daveb]

Actually in 2003 they were doing both there own and the Quigley.

I can't think what would be different unless SMB had to make changes when the 6.0 came out. The link Joe supplied was done by member Deminimis who owned a 2003 SMB 4x4 system. The term holy grail refers to those few built vans that had 7.3+SMB 4x4 system. SMB designed conversions have the twin stick Atlas transfer case. The parts post should have some of the info needed but I don't know how far he went to identify all the parts.
If you do find the correct info, please add to the post or one of the site team members can edit that in.