Brian, I know this thread is about the '70 455 engine, but if you have a TH400 flywheel inspection cover from this vintage, I'd be interested.
I sold those with the rods. I have another 70 455 with the pistons still in it,but I don’t think they will be as nice as these. This engine still ran,and was real clean inside. Everything came out easy. The other one I have was pulled and stored almost 30 years ago. They might be harder to get out.