Vibrations due to lack of sufficient rubber has always been the problem. The UCF Low-Pro Mount suffers the same problems. Some complain about the Savvy, but others like me are so far from stock feel we may not know any better.the plate and T bar support transfers the vibration to the chassis mounted bushings if they are not soft enough (i used rubber spring shackle bushings) to eat it, your gonna feel it.
the OE rubber is soft and absorbs more vibrations at that point b4 it gets to the chassis. and it was smooth with OE rubber back in the middle and the rubber bushings on the end configuration.
now IDK what the drop on your chosen skid is but if there is any way you could work keepin the rubber in the center it'd be better IMO.
Im not sure all that work for 2.5” drop is worth it. Just to be clear, if you build your own crossmember, all the vibration dampening you have is the two rubber or poly bushings near the frame rail?