I have had the same thoughts I actually brought it up to my wife last night about just buying another one something more complete. She said and I quote " are you ******* serious?" Lol she said no you have put a ton of money in that one find a way and fix it! Haha she's the boss so.... haha
The drivers side floor is solid the trunk has some rust 20 years ago I repaired it back in 01 when I first bought it. I did it fiberglass patches dont tell noone tho. Haha other than the passenger side floor the only rust I know of is that passenger side frame rail that I welded up a couple years ago. Which it still bothers me I want to replace the whole frame rail. I may someday but not yet. I will get you some pics of under the door and trunk