engine swap help
 

I am droping a 99 Gt motor into my 98 Gt. I have some questions about it, so if anyone has done this before ill take all the help i can get. Ok, here are a few questions i have come up with for now.....

1. Will all the 98 mounts work with the 99?
2. Will all the wiring be the same?
3. Will the ECU's match up or will i need a new one?
4. Will my exhaust be the same or will i need a new one?
5. Will my transmission work or will i need to replace it?

If you have done this before and had complications with something please let me know, ill take all the advice i can get. Thanks