? for those w/shock relocators

[67Fleet]

I'm in the middle of installing 1-1/2" lowering blocks, and the shock relocator kit from CPP, along with Doetsch Tech shocks. The DT shocks come with a thru-bolt for the lower shock mount, but the relocator saddle's mounting hole for it is too small for the bolt to go through. Do I need to bore the hole out on the relocator bracket? Ideas, criticism, suggestions appreciated.

Also, what are you guys using to get the stock upper shock mounts off since they're riveted on. I was thinking I could cut an X patter in it with a cut-off wheel, then knock it off with an air chisel. Any other ideas? Drilling is always a PITA.