F2 Exhaust on an F4i?
 

Would a two brothers slip on exhaust from an F2 600 work on an F4i 600? Other than fitment issues (exhaust hangers, I'll modify it to work if need be), would I run into problems with backpressure, etc?
I have a nice looking TB exhuast just sitting on my F2 that doesn't get driven anymore, seems like I could put it to better use on my new bike...

Anybody???? I wouldn't think it would be an issue seeing as how they're both 600s, but I could be completely wrong too...