A Body Floor pan question

I bought 2 off ebay about 10ish yrs ago, they were kinda generic , and did go to the front seam, which I welded solid all the way across. They took a little more fitting than some people like , but worked out well, just wish I`d have ground/smoothed the under side welding up a little more , figured , ''whose gonna look under it anyway'', at the time.
Thanks Bob. I checked out a few on EBAY and asked if they went to the seam. 3 vendors had no idea. It doesnt give you much confidence buying. Hate to do it but i may just bite the bullet and go for the AMD's and try and sell the back half i dont need.