Larry, the suspense is beginning to fade.It appears that you have bent valves.Since you will be removing the head from your daughter's 300D, why not take the parts from the head you have stashed away and put them on the head you are removing? That way you can keep your pin type glow plugs and you wont have to worry about swapping the pre-chambers.
While you are doing the job, you might want to install a new camshaft sprocket. I always put a new one on when I rebuild an engine. They do wear and will cause the timing to be off and some people will think the chain has stretched. This is the time to use an offset key.
Keep us posted on how you ars doing.
Bill Lewallen