How would you go about trying to determine the vibration caused by a simple spin fixture and dyno for testing engine components.  I am working on a project that involves attaching spin fixtures to a base plate for testing purposes.  The question is how to have the base plates attached to the floor whether to sink the base plates in the floor, bolt on to the floor, or use isolators for the vibration caused by a motor with the following characteristics:

40 hp - 1765 rpm
40 hp - 3525 rpm
33 hp - 4200 rpm

and a dyno with the following characteristics:

150 hp - 2500/6000 rpm


Please let me know how you would go about determing whether the base plate would have to be sunk in the floor, bolted to floor, or on isolators for the spin fixture and dyno due to vibration.