Charles was spot on! Just drill out the rivets and presto. It turns out that a 1/8" bit does the trick. I am sure many of you know this but I thought a little detail would help those like me that are new to this.



Backplate removed but PCI slots remain.



MB rail removed it goes to the other of the case.



Many thanks to Charles and BA for their help and encouragement.
Tomorrow looks to be a big painting day.