I also decided to clean up the front where the new floor boards were welded in. I wanted it to look smooth and not see where the metal overlaps. I'm using Metal to Metal to fill it in. It's not done yet though.
Driver's side
Passenger side
The next picture, hopefully someone can help me. I'm going to have to fab up something to fill in this gap. If you've followed my build thread, you'll know that I replaced the quarter panels, trunk drop offs, outer wheels houses and put in deep tubs. I just noticed today that I have a big gap on both sides between the quarter panel and the trunk drop off. It's right below the deep tub. Is this common to have this gap when you replace everything??? Here's some pics:
This is with the car sideways on the rotisserie. It's the passenger side.