I found one of these for really cheap so i went ahead and bought it. I have a question though, there is no port for gas on the back... does this mean that I have the model which can not be upgraded? If its available I will be buying the mig kit but i want to be sure before i buy it.

thanks in advance

edit: oops, think i answered my own question

 

IM sent

 

thanks alot for taking the time to answer my questions, i really appreciate your help with everything.

 

I have the same question, what did you find out, I had the HD though

 

Pretty sure all are able

 

i upgraded my weldpak 100 to mig. a long time ago. but it comes with a gas solenoid.
which has a gas inlet on it.
which you mount inside the machine and it sticks out of a hole thats already there.
i forget if the hole had plug or not. that you pop off.

 

you got it lam.n, looks that way on mine and i have a non "hd" weld pak. thanks for the help!