which way is correct/looks best?

I did the same thing with my '72 SE. Tiny drain holes, that is. I don't know that the tubes would last long, but I'd also be curious.

I also had to put drain holes in the bed. The '72 didn't have them (first year goof?) If I was nose down hill in the truck in weather and took off, it looked like a waterbed mattress blew up and lost everything under the tailgate. I'm sort of surprised the bed sealed so well, honestly.

#1 if anything looks right. Even if #2 was mirrored (it's not quite there, #3 on 360 is wrong) it still doesn't make sense. Six Pack hood scoop call outs, fender badges, etc. It all has to read, over symmetry.