same here. I put poly mounts on the RX7 and it transmits all the road stuff and engine torque noise staight to the chasis.This is OK for drag but this and rear diff bushing makes everything else break or rattle.
When we stiffen up everything thing then stuff like the dash and interior panels will give.
Your truck is becoming a race car/truck.....
MODS:
MMR 900HP block,Crower Hi-lift Stage II cams,L&M adjustable cam gear,JLP alluminum intake,Accufab TB,JLP Cold Induction,Dekka 60 injectors,twin 255 Fuel pumps,Accel COPs,Reichard Bbower spacer,Kenne Bell 2.3 with Magnum Powers Idler Bracket,Cobra WP,twin row radiator,F250 trans cooler mod,PI torque convertor, Brian's Truck built transmission,Carbon Fiber driveshaft, Bilstiens, slotted rotors, LFP traction bars, Bassani hi flow mids to Magnaflow, SS brake lines, Chickenears Twin Fan , AFCO interchiller, LFP E fan (2nd edition),JLP aluminum intercooler tank,Autometer boost guage, Aeroforce H/D Gauge , Pioneer AVCII , Alpine TV,Alpine speakers,two Bazooka subs,sound matting,stop theif door plates,satillite radio.