- you can get it through your local dealer, or through LotusGarage.com. It's just over $100.
- i thought the car sounded OK from the factory, but with the decat it's jaw-droppingly good. On the install, I had my local Lotus specialist install it. They reported that they had to weld on a small extension to the decat pipe and open up the pipe slightly to get it to mate with the exhaust, but other than that relatively straightforward. 100% reversible in any case, and the decat pipe itself is only $100.