I just bought a 99 Sport, 4.0. This is my first Jeep and I researched as much as I could about purchasing. Seems like other than basic mechanical function, frame is the most important. It’s got rust all over, fairly heavy flaking in many spots, but I couldn’t find a hole anywhere. I punched as many suspect spots as possible but didn’t hit anything with hammer or screwdriver. How long will a frame in this condition last if I do nothing? I will likely just use it to cruise around, possibly some light trails, I will not add mods or rock crawl. Note: it was purchased in Minnesota and has been here its whole life. First time posting, first day on the forum, first week of Jeep ownership. Thanks for any honest input you can give.