Yet another thread on the tranny mount. I'm a new owner so I did what everyone here did and pulled the tranny mount. Yes it was busted. So I bought the Torque Solution's solid mount. Very happy with the purchase. But if your budget is tight, and you only have some tears/cracks, you can do this. Fill it with windshield sealant. If you have some lacquer thinner or prep solvent, the clean up is a cinch.

 

Nice job! Looking forward to putting it in my car.

 

And the third option is to buy urethane bushings large enough and get them milled to proper size and replace stock rubbers. Depending of DIY's amount the cost is around $100-200.

CAUTION: Will cause interior noise. Even more if you have urethane rear engine mounts and LWFW like I do.

 

Another option is to fill your existing mount with urethane. This topic has been done on other cars many times - same principles.
Years ago I did my Audi A4 mounts using the following products:
Forsch Rubber to Urethane Primer (McMaster Part # 8644k31) - $16
Forsch 94a Urethane (McMaster Part # 8644k18) - $26
(not sure if part numbers are the same today - this was years ago) The key was the Urethane hardness - Window sealant is not hard enough.
Basically, prep the mount, mix your urethane, pour into mount, let dry - reinstall mount. simple.