So I guess the shocks were too long. So what are your plans to repair the mounts?
Don't mean to hijack your thread, but look at what I started with on my dart. Yours looks professional compared to what I started with. Check this out. The previous owner decided to eliminate the swing shackles completely and weld the springs solid to the frame. Check out these solid welds.
The car now has minitubs, parallel 4-link, coilovers and narrowed rear. So it all worked out.