Hi all my car is a 92 civic , I currently have hasport mounts with the street poly in them, even with the street versions the vibration at certain RPMs is more then i want, I think the main culprit is the mount between the motor and the firewall, so this is my question if i replace just that mount with say a OEM that i fill will 3m urethane and leave the hasport ones at the other locations will the motor move to much under full power? I am making a tad over 500 to the wheels. I know its hard to have your cake and eat it to but surely there must be a way to lower the vibrations even if only by half. any advice or personal experience would be great.

 

I don't advise mixing and matching motor mounts like you state, because it makes for a weird feel. You can not have your cake and eat it too with a 500 hp civic, sorry to burst your bubble. If you want oem smoothness go get a stock civic.