It's true, SMBC does offer a resin Cleveland, but unfortunately, they omitted the lettering on the valve covers.
Maybe the aftermarket will do a set of the stock valvecovers...I know SMBC has a complete resin 351C, don't know if they offer the valve covers separately.
It seems like a minor issue, but I've been waiting for a decent Cleveland for a long time. It is my favorite of the Ford V-8s. I have several projects that could use a good Cleveland, including a replica of my 1:1 69 Mach 1. No matter how modified the engine, I think Clevelands look down right mean in Ford blue with the factory lettered steel valve covers. Perhaps the after market will respond, but I imagine these would be difficult to master. I've considered it myself, but not sure how I would go about duplicating the lettering.
Of well, I am happy to have a decent Cleveland just the same.