Attention: TDR Forum Junkies 
Can't comment on the rod and wire selection, but I will say that I have owned a weldpack 100 for about 15 years now, and would never think about welding my Dodge frame with it.
They call it a 100, but it peaks at 88 amps 20% duty cycle if you read the front.
I bought a Hobart Stickmate AC/DC box to stick weld my frame together on the club to crew conversion I have been doing. 6011 root with a 7018 cap on the actual frame splices and 7018 on the reinforcing plates, all DC.
I dont know about the capability of the originator of this thread, either. But ! If he has the correct wire for his amperage range, using multiple passes, it will work. Provided the metal is clean and beveled ( if it is a butt weld) and preheated. His ability with the SMAW may be a little shaky but that would work also provided he can develop the skill necessary. If he was close by, I'd give him a hand
. GregH
