Hello

I'm new to this site I have been recommended to you by a friend hope you can help with the following.
I wish to put a twin exhaust on my car from a ST220 will this fit without any major mods being carried out I also wish to fit a ST220 rear bumper my car is a saloon are all rear bumpers the same universally fitting can I fit a hatchback bumper to my saloon.
Thanks for your replies in advance

Shaun