360 Balance Question

66dartgt said
On the motor mounts - if your car is a 73 or newer it has the captive spool type mounts - if the K frame is original to the car. You dont need solid mounts with this set up - its a failsafe design, unlike the old biscuit type used on the 72 and down cars. If the mounts are trashed replace the rubber inserts in the mounts themselves and you are good to go.

Is it hard to change out the inserts in the mounts? The local parts store has the whole mount (right) for 9.99. And left for 11.99. Or the inserts are about 4 dollars. Can the new inserts be put into the mounts without removing it from the engine? I have TTI headers, will these be in the way very much? I also want to change the tranny mount while I am at it just to be sure (as mentioned above). By the way, the vibration got worse (I've rebuilt the suspension also since this thread started), and today while driving down the highway the driveshaft came off (rear u-joint broke). This is what is promting me to replace these. I am also going to have new u-joints installed in the driveshaft, and have it balanced and checked out. Are there any good articles or instructions for replacing the engine and tranny mounts for my Duster? Sorry for the long post.
Thank You