If you lived in Tennessee, I would have welded the rockers in for you, I have a nice little 110 volt MIG, that I just love playing with and I'm getting ready to fix ALOT of rust on my 88 Ranger, and I'm also doing the body on a 67 Mustang, lots of welding on it, I had to replace both Back panels with new panels, and finish up welding the new floor pans in.
Also, I don't know if it's just me or do alot of Explores have that problem with rust in the Rockers, this 92 I traded for to part out the rockers are rusted out on it, and my Father-In-Laws is trying to rust, bit I fixed it before it got too bad.
Robert