$.02: It looks like I'll have the unpopular opinion here but I'll through it out for consideration.
For about the same $$ as the Hot Toppers, you can get a "Builders Kit" from Gardener Westcott (and other suppliers), a full set of chromed, stainless bolts for the engine, transmission, rocker boxes, derby & timing covers, etc. While they certainly take longer to install than Toppers, they are better bolts then the HD cadmium (which are poisonous, btw) and if you ever have to work on the motor, you will save time without the extra steps of removing and replacing the covers. I guess I have an aversion to non functional, decorative covers as opposed to a quality piece, in this case, bolt.
Here is an example: