floor pan replacement..

["Jon Moody (BME)" <mood@rad.unc.edu>]

A friend of mine was telling me that when he replaces floor pans he
usually tack welds them in place and then continuously welds them.  I
would think this would make much harder to do the job the next time they
need to be replaced.  What is the best way to weld them in assuming your
using a MIG welder?  Also, when replacing floor panels do you need to brace
the top of the doors?  Thanks.

Jon Moody '73TR6