what kind do you got and where did you get them?
i can't find any anywhere for a 4th gen
also pros and cons

 

Alot of people use the motor mount inserts. I think there are only a few companies that have true aftermarket mounts, and they are duckets for a set.

 

Innovation Mounts and Explicit Speed Mounts I believe are the two in production right now..
And yes, there are motor mount inserts that you can get for cheaper.

Place Racing Mounts are also another one, but they don't exist/make them anymore..

Do a search and you'll probably find a lot on them..