To use a solid rear trans mount ?

[H.A.A.C. Racing]

I have always heard to never mount tail shaft solid...............but I have to tell you, I have no idea why. I would think that if everything is mounted as solid as a rock, but then you have the tail shaft just bouncing around, that would cause breakage. I am sure chassis flex has alot to do with it, anyway, i have had everything solid mounted on my car forever with no problem.

[Raceready]

My car weighs 3330 lbs,turbo 400,pontiac engine front plate, mid plate,crossmember is round tube bolt in,tailshaft is bolted straight to the crossmember.2X3 Chassis 4 link a arm car.No issues in 8 years running 6.70 1/8 mile 10.70 1/4 mile 60 ft 1.38.If the car don't twist shouldn't have a problem.

[Mitch Perkins]

We use the urethane mounts on every car built in the shop. With 1/4" front and mid-plates, or with the .090" mid-plates ( which I consider obsolete, 1/4" mid-plate helps to transfer torque to the chassis and the thin steel plates distort). Never had issues with breakage, However, the ones built with solid mounts at the least cracked the mounting bosses on the case even if the housing survived.