I always say save your money and buy the right one the first time. I dont ever recommend buying a cheap welder because a good brand machine holds its value if you ever have to sell it. I highly recommend Miller or Lincoln...Hobart is is made by Miller. Also, dont skimp on the gas...yes you can weld without it but take some pride in your work and do it right.
You dont need a 220 machine for anything on a mustang... Unless you are welding 1/4" steel all the time, you dont need it. Its nice if you ever do, but what you can do a car can be done with a 110v machine.
That was my main concern was if the 110v machine would do the trick. I didnt want to get stuck with one silly part i needed a stronger welder for. Thanks for the good advice. And i think i will save myself the headache of all that extra splatter and grinding and go with the gas. I know the Hobart's are made by Miller but arent the Clarke's made by miller as well?