The car is too NOISY for UK trackday use! Fitting this 2bular QP system will make sure you can enjoy any trackday at any circuit. Using a 24" (610mm) long silencer incorporating twin Helmholtz noise-cancelling chambers and packed with Acoustafil ZT-1 material plus a 215mm long chambered silencer fitted in place of the plain link-pipe (this is a different layout from the later 380/400 series cars) a Silenced de-Cat Pipe - SDCP - you will be running approx 95dbs. The complete QP system is a quality hand-built/TIG-welded product. Proved over thousands of miles of trackdays.
If you want to run at the tougher noise-limit circuits - Bedford/Brands/Goodwood you will need the Add-on silencers. Fitting is an easy slip-on/swap-over task at trackside.