i know what you fellas are talking about--i've been building a little modified body out of a 1920's studebaker and after alot of melted metal
using both gas and mig i've found little spot welds with the mig is the easiest and gives the best result.
i've got a little scratch start tig but have trouble controlling the heat on that with thin metal- i really need to practice more.
i look forward to more pictures and progress!!