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I had solids, they were harsh but not disturbingly so... I've since removed them and gone poly...
I have no issues with poly bushings even at my power level... Alignment consistently stays where we put it...
One thing we noticed when we pulled the solid bushings were hot spots... These bushings are going into pockets of stamped steel. We had several very small areas on each where there was a corresponding high spot in the steel that was wearing into the aluminum bushing. Eventually this will settle down and should solidify, but I wanted to point it out... We are better served at my power levels with the poly mounts...
As for the harshness, I have my motor installed with motor plates, front and rear, so I feel every bump, burp, and fart the car ever makes... Harshness and noise had nothing to do with removing the solid mounts... It was a overall package performance thing... There are benefits to each. It's just a matter of personal choice and performance goals. The decision need not be made based on "power" goals in my opinion...
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If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley
Horsepower is how fast you hit the wall.
Torque is how far you take the wall with you.
“If everything seems under control, you're just not going fast enough.” Mario Andretti
If you can turn, you ain't going fast enough...
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