We do sell the compressor cover backing plate clamps for the E compressor cover that we make. I can't remember exactly how much but I'm sure they are somewhere in the $4 -$5 dollar range. However once you have the proper orientation determined and weld it up to your stock actuator, there is one specific bolt hole you will have to drill out. It is this hole circled in red.
As you can see in this picture of a TA6265 series turbo, this actuator already has the hole pre-drilled for the E cover bracket. (TA series = stock appearing compressor cover.)