Removing sleeper extenders

I currently own a 2007, 379 extended hood and I want to remove the sleeper extenders from the 63" stand-up sleeper. My question is, I can probably remove them but I need to know if I can simply fill in the missing rivet holes with rivets using a cheap 3/16 air hydraulic riveter from Harbor Freight? The gun is only $50 and seems like it should solve my issue unless I'm missing something? Or should I take the alternate route and just buy a sht load of 1/4 inch flat headed bolts to use in place of the old ones?

 

So don't bother filling in the holes with rivets? I know when it comes to removing that big fiberglass piece at the top corners that'll require a visit to the body shop but I was hoping to save a few bucks by filling in those holes with rivets.

 

I would add some silicone in the holes prior to installing them. I just want some advice from someone that has done this project before so I don't screw it up.

 

I've never liked how they look and just want them gone. It's a much cleaner look too.

 

Go 4 floors up and read what I was planning on doing when installing them so they don't leak. I'll probably end up using huck style bolts then and removing the interior to do it right.