Motor/tranny mount upgrade question

[gverelli]

Just a quick question, if I upgrade motor mounts to poly (i.e. AKG 75D), is it a MUST to upgrade the tranny mounts as well? As I understand it is mostly the tranny mounts that will cause noticible vibration, so I was contemplating on only doing motor mounts, but want to confirm that this will be okay and will not have any negative effects. I am just trying to avoid having crazy vibration. The car is tracked but is also my daily driver.

Thanks for your help

Gianni

[E30Gus]

I have poly motor mounts with stock rubber tranny mounts with no negative affects. Do it!

[gverelli]

I have poly motor mounts with stock rubber tranny mounts with no negative affects. Do it!

Perfect thanks!

[gverelli]

Sorry to bump this, but I am about to make an order from AKG for 75D motormounts, I was planning on keeping the the transmission mounts OE to prevent vibrations.
Should I order a 75D diff mount while Im at it? Or is it bad to mix and match? Sub-frame and trailing arm bushings have been all changed with OE bushings. The car does see track time but still a daily driver. Let me know what is a good idea.

Will there be vibrations with the softer 80a tranny mounts?