Simple to assemble pedal plate designed for Simgrade VX-Pro pedals, but can be easily extended to other ones. You will have to redesign the pedal mount extension, most probably switch to 8040 profile to accommodate larger sets. 

This is base design that can be extended easily according to your particular needs. Used the Sim-Lab heel plate as I already have it, but you can switch to whatever according your preferences.

The pedal plate has space for 3 full size 50W bass shakers and is designed to be connected to rig frame using rubber dampers to counter vibration propagation.

 This construction proved to be very stable, of course I could have used pre-made pedal plate but the whole design is meant to be as compact as possible and to fit properly on my rig between the actuators. It will be used with my rail adjustment system and sized according to it.

Using Alu Exrtrusion Profiles for this design allows me easily to connect all the extra accessories I have next to the pedals. Most important feature is the small length of the whole assembly which will provide better clearance for the pedal slider + motion platform.

Side shakers are mounted with the 3d printed brackets linked in the Connected Projects section, the heel plate is drilled to attach the third one.