Wow sounds like fun. Im Hoping to get 300+ out of my mk1 bam. So far engine wise ive fitted an oil catch can, oversized badger 5 tip, forge 008 recirc and a k&n typhoon. It came with a cobra 3" turbo back non res exhaust with hiflow sports cat too. Check out my readers ride thread if you like
https://forums.seatcupra.net/index.php?threads/mk1-lcr-project.447835/page-2#post-4821433
https://forums.seatcupra.net/index.php?threads/mk1-lcr-project.447835/page-2#post-4821433