Are you trying to repair the rockers that are rusted through?
If they are steel, but you are on a budget, I'd cut out the bad stuff and coat the interior with some of your favorite rust inhibitor paint. Then just rivet on some steel and use seam sealer from Eastwood to make sure water doesn't get in there (apply some seam seal on the rivet before you insert it in the hole).
I recommend this if this is a beater and you are not concerned on how it looks. You can also do this on the rear quarter panel if you are really feeling froggy.
I hope this helps you with your decision!
This is my plan, but not today, maybe not this season. I have too many projects, and beater truck rockers is LOW on the list lol.
I'm going to use gorilla glue brand duct tape (black, very strong, weather-resistant too) to cover the hole for the time being. My garage doesn't care about that kinda stuff.
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I got the brake lines installed (not seen in photo), brake hardware replaced, and I swapped the brake cylinders over from the old axle. The new ones I got are not the correct ones for this truck unfortunately.
I started bleeding brakes and ran out of fluid, I didn't want to put the black fluid coming out back into it. So tomorrow I'll be finishing up the brakes, installing the shocks, driveshaft and back bumper, and backing it out for a test drive.
I will be telling the garage to replace the emergency brake lines, as I don't have a replacement set, and I really don't want to take the brakes apart again, I had to twice because I thought I reassembled them wrong (I didn't).
The garage todo tasks:
Install new tires
Install used tire on spare rim
Emergency brake line replacement
Recharge the AC
Inspection