For those of you who aren't happy with the embossed and painted on bolt heads of the MGP Brake Caliper Covers or have shied away from them because of it, here is a simple mod that improves their looks dramatically.
I simply center punched the embossed area and drilled it out with a 1/4" drill bit, dressed up the backside with a file and then used JB Weld to epoxy some Stainless Cap Head screws in place. I specifically used M6 x 8mm Low Profile cap head screws, but I'm sure you could use an imperial size as well. There is plenty of clearance front and back. I like the low profile heads on the cap screws because, (1) it allows additional clearance between the screw head and the wheel and (2) it gives the illusion that the bolt is countersunk into the caliper. The 8mm length was the shortest I could find, you just want to make sure there are enough threads protruding through the backside to allow the JB Weld to key into the threads for a better grip. When applying the JB Weld I first put a small bead under the head of the bolt and let that set up. I did this to get the bolt positioned correctly and to hold it in place when I flipped them over to epoxy the backside. I then applied a generous fillet of JB Weld on the back making sure to work it into the threads and against the metal backing.
I think the finished product looks much better than the stock version. Only time will tell how well the JB Weld holds up in this environment, but even if I have to replace a bolt every now and then I think it was well worth the effort.