Replacing frame on rusty old truck

I have a truck restoration project that is a bit worse than I expected. I need to replace the frame. I’m using WD40 to penetrate and soak all the body panel bolts and body mount bolts before I try loosening them. The donor frame I found also needed to be stripped of all running gear, brake lines and suspension. WD40 is my go-to for loosening stubborn rusty nuts and bolts. As you can see in the photos, I’ve got the frame stripped and ready for paint. But I have a long way to go.