Spot Welder

[timfboston@aol.com]

I am thinking about tackling my withering sills and floors on my 71' B.  I do 
not have any welding experience, but I am planning on taking a class.  I was 
wondering if it would be better/faster/easier to rent a spot welder instead of 
using a MIG to plug fill several hundred holes that I will need to drill/punch 
out.  Also, I plan on getting the OE floors with the nuts, etc., but is there 
any difference between the OE castle section, rockers and the reproduction ones?
 
Thank you,
 
Tim