Most of them look a little bit out of place but if you want them it shoud be quite easy install. There's just cans and some sort of adapters which connect cans to existing exhaust system. Like this: https://www.euromotards.com/product...hu8TxL-pDXgPs538yqkUOl6Cc17V0IYTG9UkVNDpM5BX3
I have a pair of 1098 cans in my workshop ready to see how close they are. Not that I'd use them, but they are cheap and will help me establish what would need to be done to aftermarket 1098 Cans to make them work.