[DeTomaso] Welding question? Stainless with MIG

[steven.liebenow at att.net]

Hopefully VERY SOONLY..... I will be needing to fit my new mufflers to a set of 
new headers....

I ordered the mufflers with the inlet pipes unwelded, so that I could trim and 
weld accordingly.....

My question is this.....  Can I use my MIG welder to safely tack the pipes where 
they need to be????      I would then drop them back out and take them down to 
the welder for proper stainless finishing......

Can anyone chime in on what sorts of issues may arise??

Thanks!
Steve